SqliteHelper代码,CSharp代码库,德仔网

代码语言
代码分类
【CSharp】 SqliteHelper
作者:天楚 / 发布于2015/10/8/ 691

	using System;
	using System.Data;
	using System.Text.RegularExpressions;
	using System.Xml;
	using System.IO;
	using System.Collections;
	using System.Data.SQLite;

	namespace DBUtility.SQLite
	{
	 /// <summary>
	 /// SQLiteHelper is a utility class similar to "SQLHelper" in MS
	 /// Data Access Application Block and follows similar pattern.
	 /// </summary>
	 public class SQLiteHelper
	 {
	 /// <summary>
	 /// Creates a new <see cref="SQLiteHelper"/> instance. The ctor is marked private since all members are static.
	 /// </summary>
	 private SQLiteHelper()
	 {
	 }
	 /// <summary>
	 /// Creates the command.
	 /// </summary>
	 /// <param name="connection">Connection.</param>
	 /// <param name="commandText">Command text.</param>
	 /// <param name="commandParameters">Command parameters.</param>
	 /// <returns>SQLite Command</returns>
	 public static SQLiteCommand CreateCommand(SQLiteConnection connection, string commandText, params SQLiteParameter[] commandParameters)
	 {
	 SQLiteCommand cmd = new SQLiteCommand(commandText, connection);
	 if (commandParameters.Length > 0)
	 {
	 foreach (SQLiteParameter parm in commandParameters)
	 cmd.Parameters.Add(parm);
	 }
	 return cmd;
	 }

	 /// <summary>
	 /// Creates the command.
	 /// </summary>
	 /// <param name="connectionString">Connection string.</param>
	 /// <param name="commandText">Command text.</param>
	 /// <param name="commandParameters">Command parameters.</param>
	 /// <returns>SQLite Command</returns>
	 public static SQLiteCommand CreateCommand(string connectionString, string commandText, params SQLiteParameter[] commandParameters)
	 {
	 SQLiteConnection cn = new SQLiteConnection(connectionString);

	 SQLiteCommand cmd = new SQLiteCommand(commandText, cn);

	 if (commandParameters.Length > 0)
	 {
	 foreach (SQLiteParameter parm in commandParameters)
	 cmd.Parameters.Add(parm);
	 }
	 return cmd;
	 }
	 /// <summary>
	 /// Creates the parameter.
	 /// </summary>
	 /// <param name="parameterName">Name of the parameter.</param>
	 /// <param name="parameterType">Parameter type.</param>
	 /// <param name="parameterValue">Parameter value.</param>
	 /// <returns>SQLiteParameter</returns>
	 public static SQLiteParameter CreateParameter(string parameterName, System.Data.DbType parameterType, object parameterValue)
	 {
	 SQLiteParameter parameter = new SQLiteParameter();
	 parameter.DbType = parameterType;
	 parameter.ParameterName = parameterName;
	 parameter.Value = parameterValue;
	 return parameter;
	 }

	 /// <summary>
	 /// Shortcut method to execute dataset from SQL Statement and object[] arrray of parameter values
	 /// </summary>
	 /// <param name="connectionString">SQLite Connection string</param>
	 /// <param name="commandText">SQL Statement with embedded "@param" style parameter names</param>
	 /// <param name="paramList">object[] array of parameter values</param>
	 /// <returns></returns>
	 public static DataSet ExecuteDataSet(string connectionString, string commandText, object[] paramList)
	 {
	 SQLiteConnection cn = new SQLiteConnection(connectionString);
	 SQLiteCommand cmd = cn.CreateCommand();

	
	 cmd.CommandText = commandText;
	 if (paramList != null)
	 {
	 AttachParameters(cmd,commandText, paramList);
	 }
	 DataSet ds = new DataSet();
	 if (cn.State == ConnectionState.Closed)
	 cn.Open();
	 SQLiteDataAdapter da = new SQLiteDataAdapter(cmd);
	 da.Fill(ds);
	 da.Dispose();
	 cmd.Dispose();
	 cn.Close();
	 return ds;
	 }
	 /// <summary>
	 /// Shortcut method to execute dataset from SQL Statement and object[] arrray of parameter values
	 /// </summary>
	 /// <param name="cn">Connection.</param>
	 /// <param name="commandText">Command text.</param>
	 /// <param name="paramList">Param list.</param>
	 /// <returns></returns>
	 public static DataSet ExecuteDataSet(SQLiteConnection cn, string commandText, object[] paramList)
	 {

	 SQLiteCommand cmd = cn.CreateCommand();

	
	 cmd.CommandText = commandText;
	 if (paramList != null)
	 {
	 AttachParameters(cmd,commandText, paramList);
	 }
	 DataSet ds = new DataSet();
	 if (cn.State == ConnectionState.Closed)
	 cn.Open();
	 SQLiteDataAdapter da = new SQLiteDataAdapter(cmd);
	 da.Fill(ds);
	 da.Dispose();
	 cmd.Dispose();
	 cn.Close();
	 return ds;
	 }
	 /// <summary>
	 /// Executes the dataset from a populated Command object.
	 /// </summary>
	 /// <param name="cmd">Fully populated SQLiteCommand</param>
	 /// <returns>DataSet</returns>
	 public static DataSet ExecuteDataset(SQLiteCommand cmd)
	 {
	 if (cmd.Connection.State == ConnectionState.Closed)
	 cmd.Connection.Open();
	 DataSet ds = new DataSet();
	 SQLiteDataAdapter da = new SQLiteDataAdapter(cmd);
	 da.Fill(ds);
	 da.Dispose();
	 cmd.Connection.Close();
	 cmd.Dispose();
	 return ds;
	 }

	 /// <summary>
	 /// Executes the dataset in a SQLite Transaction
	 /// </summary>
	 /// <param name="transaction">SQLiteTransaction. Transaction consists of Connection, Transaction, /// and Command, all of which must be created prior to making this method call. </param>
	 /// <param name="commandText">Command text.</param>
	 /// <param name="commandParameters">Sqlite Command parameters.</param>
	 /// <returns>DataSet</returns>
	 /// <remarks>user must examine Transaction Object and handle transaction.connection .Close, etc.</remarks>
	 public static DataSet ExecuteDataset(SQLiteTransaction transaction, string commandText, params SQLiteParameter[] commandParameters)
	 {

	 if (transaction == null) throw new ArgumentNullException("transaction");
	 if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rolled back or committed, please provide an open transaction.", "transaction");
	 IDbCommand cmd = transaction.Connection.CreateCommand();
	 cmd.CommandText = commandText;
	 foreach (SQLiteParameter parm in commandParameters)
	 {
	 cmd.Parameters.Add(parm);
	 }
	 if (transaction.Connection.State == ConnectionState.Closed)
	 transaction.Connection.Open();
	 DataSet ds = ExecuteDataset((SQLiteCommand)cmd);
	 return ds;
	 }

	 /// <summary>
	 /// Executes the dataset with Transaction and object array of parameter values.
	 /// </summary>
	 /// <param name="transaction">SQLiteTransaction. Transaction consists of Connection, Transaction, /// and Command, all of which must be created prior to making this method call. </param>
	 /// <param name="commandText">Command text.</param>
	 /// <param name="commandParameters">object[] array of parameter values.</param>
	 /// <returns>DataSet</returns>
	 /// <remarks>user must examine Transaction Object and handle transaction.connection .Close, etc.</remarks>
	 public static DataSet ExecuteDataset(SQLiteTransaction transaction, string commandText, object[] commandParameters)
	 {

	 if (transaction == null) throw new ArgumentNullException("transaction");
	 if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rolled back or committed, please provide an open transaction.", "transaction");
	 IDbCommand cmd = transaction.Connection.CreateCommand();
	 cmd.CommandText = commandText;
	 AttachParameters((SQLiteCommand)cmd,cmd.CommandText, commandParameters);
	 if (transaction.Connection.State == ConnectionState.Closed)
	 transaction.Connection.Open();

	 DataSet ds = ExecuteDataset((SQLiteCommand)cmd);
	 return ds;
	 }

	 #region UpdateDataset
	 /// <summary>
	 /// Executes the respective command for each inserted, updated, or deleted row in the DataSet.
	 /// </summary>
	 /// <remarks>
	 /// e.g.:
	 /// UpdateDataset(conn, insertCommand, deleteCommand, updateCommand, dataSet, "Order");
	 /// </remarks>
	 /// <param name="insertCommand">A valid SQL statement to insert new records into the data source</param>
	 /// <param name="deleteCommand">A valid SQL statement to delete records from the data source</param>
	 /// <param name="updateCommand">A valid SQL statement used to update records in the data source</param>
	 /// <param name="dataSet">The DataSet used to update the data source</param>
	 /// <param name="tableName">The DataTable used to update the data source.</param>
	 public static void UpdateDataset(SQLiteCommand insertCommand, SQLiteCommand deleteCommand, SQLiteCommand updateCommand, DataSet dataSet, string tableName)
	 {
	 if (insertCommand == null) throw new ArgumentNullException("insertCommand");
	 if (deleteCommand == null) throw new ArgumentNullException("deleteCommand");
	 if (updateCommand == null) throw new ArgumentNullException("updateCommand");
	 if (tableName == null || tableName.Length == 0) throw new ArgumentNullException("tableName");

	 // Create a SQLiteDataAdapter, and dispose of it after we are done
	 using (SQLiteDataAdapter dataAdapter = new SQLiteDataAdapter())
	 {
	 // Set the data adapter commands
	 dataAdapter.UpdateCommand = updateCommand;
	 dataAdapter.InsertCommand = insertCommand;
	 dataAdapter.DeleteCommand = deleteCommand;

	 // Update the dataset changes in the data source
	 dataAdapter.Update(dataSet, tableName);

	 // Commit all the changes made to the DataSet
	 dataSet.AcceptChanges();
	 }
	 }
	 #endregion

	
	 /// <summary>
	 /// ShortCut method to return IDataReader
	 /// NOTE: You should explicitly close the Command.connection you passed in as
	 /// well as call Dispose on the Command after reader is closed.
	 /// We do this because IDataReader has no underlying Connection Property.
	 /// </summary>
	 /// <param name="cmd">SQLiteCommand Object</param>
	 /// <param name="commandText">SQL Statement with optional embedded "@param" style parameters</param>
	 /// <param name="paramList">object[] array of parameter values</param>
	 /// <returns>IDataReader</returns>
	 public static IDataReader ExecuteReader(SQLiteCommand cmd, string commandText, object[] paramList)
	 {
	 if (cmd.Connection == null)
	 throw new ArgumentException("Command must have live connection attached.", "cmd");
	 cmd.CommandText = commandText;
	 AttachParameters(cmd,commandText, paramList);
	 if (cmd.Connection.State == ConnectionState.Closed)
	 cmd.Connection.Open();
	 IDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
	 return rdr;
	 }

	 /// <summary>
	 /// Shortcut to ExecuteNonQuery with SqlStatement and object[] param values
	 /// </summary>
	 /// <param name="connectionString">SQLite Connection String</param>
	 /// <param name="commandText">Sql Statement with embedded "@param" style parameters</param>
	 /// <param name="paramList">object[] array of parameter values</param>
	 /// <returns></returns>
	 public static int ExecuteNonQuery(string connectionString, string commandText, params object[] paramList)
	 {
	 SQLiteConnection cn = new SQLiteConnection(connectionString);
	 SQLiteCommand cmd = cn.CreateCommand();
	 cmd.CommandText = commandText;
	 AttachParameters(cmd,commandText, paramList);
	 if (cn.State == ConnectionState.Closed)
	 cn.Open();
	 int result = cmd.ExecuteNonQuery();
	 cmd.Dispose();
	 cn.Close();

	 return result;
	 }

	 public static int ExecuteNonQuery(SQLiteConnection cn, string commandText, params object[] paramList)
	 {

	 SQLiteCommand cmd = cn.CreateCommand();
	 cmd.CommandText = commandText;
	 AttachParameters(cmd,commandText, paramList);
	 if (cn.State == ConnectionState.Closed)
	 cn.Open();
	 int result = cmd.ExecuteNonQuery();
	 cmd.Dispose();
	 cn.Close();

	 return result;
	 }

	 /// <summary>
	 /// Executes non-query sql Statment with Transaction
	 /// </summary>
	 /// <param name="transaction">SQLiteTransaction. Transaction consists of Connection, Transaction, /// and Command, all of which must be created prior to making this method call. </param>
	 /// <param name="commandText">Command text.</param>
	 /// <param name="paramList">Param list.</param>
	 /// <returns>Integer</returns>
	 /// <remarks>user must examine Transaction Object and handle transaction.connection .Close, etc.</remarks>
	 public static int ExecuteNonQuery(SQLiteTransaction transaction, string commandText, params object[] paramList)
	 {
	 if (transaction == null) throw new ArgumentNullException("transaction");
	 if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rolled back or committed, please provide an open transaction.", "transaction");
	 IDbCommand cmd = transaction.Connection.CreateCommand();
	 cmd.CommandText = commandText;
	 AttachParameters((SQLiteCommand)cmd,cmd.CommandText, paramList);
	 if (transaction.Connection.State == ConnectionState.Closed)
	 transaction.Connection.Open();
	 int result = cmd.ExecuteNonQuery();
	 cmd.Dispose();
	 return result;
	 }

	
	 /// <summary>
	 /// Executes the non query.
	 /// </summary>
	 /// <param name="cmd">CMD.</param>
	 /// <returns></returns>
	 public static int ExecuteNonQuery(IDbCommand cmd)
	 {
	 if (cmd.Connection.State == ConnectionState.Closed)
	 cmd.Connection.Open();
	 int result = cmd.ExecuteNonQuery();
	 cmd.Connection.Close();
	 cmd.Dispose();
	 return result;
	 }

	 /// <summary>
	 /// Shortcut to ExecuteScalar with Sql Statement embedded params and object[] param values
	 /// </summary>
	 /// <param name="connectionString">SQLite Connection String</param>
	 /// <param name="commandText">SQL statment with embedded "@param" style parameters</param>
	 /// <param name="paramList">object[] array of param values</param>
	 /// <returns></returns>
	 public static object ExecuteScalar(string connectionString, string commandText, params object[] paramList)
	 {
	 SQLiteConnection cn = new SQLiteConnection(connectionString);
	 SQLiteCommand cmd = cn.CreateCommand();
	 cmd.CommandText = commandText;
	 AttachParameters(cmd,commandText, paramList);
	 if (cn.State == ConnectionState.Closed)
	 cn.Open();
	 object result = cmd.ExecuteScalar();
	 cmd.Dispose();
	 cn.Close();

	 return result;
	 }

	 /// <summary>
	 /// Execute XmlReader with complete Command
	 /// </summary>
	 /// <param name="command">SQLite Command</param>
	 /// <returns>XmlReader</returns>
	 public static XmlReader ExecuteXmlReader(IDbCommand command)
	 { // open the connection if necessary, but make sure we
	 // know to close it when we?re done.
	 if (command.Connection.State != ConnectionState.Open)
	 {
	 command.Connection.Open();
	 }

	 // get a data adapter
	 SQLiteDataAdapter da = new SQLiteDataAdapter((SQLiteCommand)command);
	 DataSet ds = new DataSet();
	 // fill the data set, and return the schema information
	 da.MissingSchemaAction = MissingSchemaAction.AddWithKey;
	 da.Fill(ds);
	 // convert our dataset to XML
	 StringReader stream = new StringReader(ds.GetXml());
	 command.Connection.Close();
	 // convert our stream of text to an XmlReader
	 return new XmlTextReader(stream);
	 }

	 /// <summary>
	 /// Parses parameter names from SQL Statement, assigns values from object array , /// and returns fully populated ParameterCollection.
	 /// </summary>
	 /// <param name="commandText">Sql Statement with "@param" style embedded parameters</param>
	 /// <param name="paramList">object[] array of parameter values</param>
	 /// <returns>SQLiteParameterCollection</returns>
	 /// <remarks>Status experimental. Regex appears to be handling most issues. Note that parameter object array must be in same ///order as parameter names appear in SQL statement.</remarks>
	 private static SQLiteParameterCollection AttachParameters(SQLiteCommand cmd, string commandText, params object[] paramList)
	 {
	 if (paramList == null || paramList.Length == 0) return null;

	 SQLiteParameterCollection coll = cmd.Parameters;
	 string parmString = commandText.Substring(commandText.IndexOf("@"));
	 // pre-process the string so always at least 1 space after a comma.
	 parmString = parmString.Replace(",", " ,");
	 // get the named parameters into a match collection
	 string pattern = @"(@)\S*(.*?)\b";
	 Regex ex = new Regex(pattern, RegexOptions.IgnoreCase);
	 MatchCollection mc = ex.Matches(parmString);
	 string[] paramNames = new string[mc.Count];
	 int i = 0;
	 foreach (Match m in mc)
	 {
	 paramNames[i] = m.Value;
	 i++;
	 }

	 // now let's type the parameters
	 int j = 0;
	 Type t = null;
	 foreach (object o in paramList)
	 {
	 t = o.GetType();

	 SQLiteParameter parm = new SQLiteParameter();
	 switch (t.ToString())
	 {

	 case ("DBNull"):
	 case ("Char"):
	 case ("SByte"):
	 case ("UInt16"):
	 case ("UInt32"):
	 case ("UInt64"):
	 throw new SystemException("Invalid data type");

	
	 case ("System.String"):
	 parm.DbType = DbType.String;
	 parm.ParameterName = paramNames[j];
	 parm.Value = (string)paramList[j];
	 coll.Add(parm);
	 break;

	 case ("System.Byte[]"):
	 parm.DbType = DbType.Binary;
	 parm.ParameterName = paramNames[j];
	 parm.Value = (byte[])paramList[j];
	 coll.Add(parm);
	 break;

	 case ("System.Int32"):
	 parm.DbType = DbType.Int32;
	 parm.ParameterName = paramNames[j];
	 parm.Value = (int)paramList[j];
	 coll.Add(parm);
	 break;

	 case ("System.Boolean"):
	 parm.DbType = DbType.Boolean;
	 parm.ParameterName = paramNames[j];
	 parm.Value = (bool)paramList[j];
	 coll.Add(parm);
	 break;

	 case ("System.DateTime"):
	 parm.DbType = DbType.DateTime;
	 parm.ParameterName = paramNames[j];
	 parm.Value = Convert.ToDateTime(paramList[j]);
	 coll.Add(parm);
	 break;

	 case ("System.Double"):
	 parm.DbType = DbType.Double;
	 parm.ParameterName = paramNames[j];
	 parm.Value = Convert.ToDouble(paramList[j]);
	 coll.Add(parm);
	 break;

	 case ("System.Decimal"):
	 parm.DbType = DbType.Decimal;
	 parm.ParameterName = paramNames[j];
	 parm.Value = Convert.ToDecimal(paramList[j]);
	 break;

	 case ("System.Guid"):
	 parm.DbType = DbType.Guid;
	 parm.ParameterName = paramNames[j];
	 parm.Value = (System.Guid)(paramList[j]);
	 break;

	 case ("System.Object"):

	 parm.DbType = DbType.Object;
	 parm.ParameterName = paramNames[j];
	 parm.Value = paramList[j];
	 coll.Add(parm);
	 break;

	 default:
	 throw new SystemException("Value is of unknown data type");

	 } // end switch

	 j++;
	 }
	 return coll;
	 }

	 /// <summary>
	 /// Executes non query typed params from a DataRow
	 /// </summary>
	 /// <param name="command">Command.</param>
	 /// <param name="dataRow">Data row.</param>
	 /// <returns>Integer result code</returns>
	 public static int ExecuteNonQueryTypedParams(IDbCommand command, DataRow dataRow)
	 {
	 int retVal = 0;

	 // If the row has values, the store procedure parameters must be initialized
	 if (dataRow != null && dataRow.ItemArray.Length > 0)
	 {
	 // Set the parameters values
	 AssignParameterValues(command.Parameters, dataRow);

	 retVal = ExecuteNonQuery(command);
	 }
	 else
	 {
	 retVal = ExecuteNonQuery(command);
	 }

	 return retVal;
	 }

	 /// <summary>
	 /// This method assigns dataRow column values to an IDataParameterCollection
	 /// </summary>
	 /// <param name="commandParameters">The IDataParameterCollection to be assigned values</param>
	 /// <param name="dataRow">The dataRow used to hold the command's parameter values</param>
	 /// <exception cref="System.InvalidOperationException">Thrown if any of the parameter names are invalid.</exception>
	 protected internal static void AssignParameterValues(IDataParameterCollection commandParameters, DataRow dataRow)
	 {
	 if (commandParameters == null || dataRow == null)
	 {
	 // Do nothing if we get no data
	 return;
	 }

	 DataColumnCollection columns = dataRow.Table.Columns;

	 int i = 0;
	 // Set the parameters values
	 foreach (IDataParameter commandParameter in commandParameters)
	 {
	 // Check the parameter name
	 if (commandParameter.ParameterName == null ||
	 commandParameter.ParameterName.Length <= 1)
	 throw new InvalidOperationException(string.Format(
	 "Please provide a valid parameter name on the parameter #{0}, the ParameterName property has the following value: '{1}'.",
	 i, commandParameter.ParameterName));

	 if (columns.Contains(commandParameter.ParameterName))
	 commandParameter.Value = dataRow[commandParameter.ParameterName];
	 else if (columns.Contains(commandParameter.ParameterName.Substring(1)))
	 commandParameter.Value = dataRow[commandParameter.ParameterName.Substring(1)];

	 i++;
	 }
	 }

	 /// <summary>
	 /// This method assigns dataRow column values to an array of IDataParameters
	 /// </summary>
	 /// <param name="commandParameters">Array of IDataParameters to be assigned values</param>
	 /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values</param>
	 /// <exception cref="System.InvalidOperationException">Thrown if any of the parameter names are invalid.</exception>
	 protected void AssignParameterValues(IDataParameter[] commandParameters, DataRow dataRow)
	 {
	 if ((commandParameters == null) || (dataRow == null))
	 {
	 // Do nothing if we get no data
	 return;
	 }

	 DataColumnCollection columns = dataRow.Table.Columns;

	 int i = 0;
	 // Set the parameters values
	 foreach (IDataParameter commandParameter in commandParameters)
	 {
	 // Check the parameter name
	 if (commandParameter.ParameterName == null ||
	 commandParameter.ParameterName.Length <= 1)
	 throw new InvalidOperationException(string.Format(
	 "Please provide a valid parameter name on the parameter #{0}, the ParameterName property has the following value: '{1}'.",
	 i, commandParameter.ParameterName));

	 if (columns.Contains(commandParameter.ParameterName))
	 commandParameter.Value = dataRow[commandParameter.ParameterName];
	 else if (columns.Contains(commandParameter.ParameterName.Substring(1)))
	 commandParameter.Value = dataRow[commandParameter.ParameterName.Substring(1)];

	 i++;
	 }
	 }

	 /// <summary>
	 /// This method assigns an array of values to an array of IDataParameters
	 /// </summary>
	 /// <param name="commandParameters">Array of IDataParameters to be assigned values</param>
	 /// <param name="parameterValues">Array of objects holding the values to be assigned</param>
	 /// <exception cref="System.ArgumentException">Thrown if an incorrect number of parameters are passed.</exception>
	 protected void AssignParameterValues(IDataParameter[] commandParameters, params object[] parameterValues)
	 {
	 if ((commandParameters == null) || (parameterValues == null))
	 {
	 // Do nothing if we get no data
	 return;
	 }

	 // We must have the same number of values as we pave parameters to put them in
	 if (commandParameters.Length != parameterValues.Length)
	 {
	 throw new ArgumentException("Parameter count does not match Parameter Value count.");
	 }

	 // Iterate through the IDataParameters, assigning the values from the corresponding position in the
	 // value array
	 for (int i = 0, j = commandParameters.Length, k = 0; i < j; i++)
	 {
	 if (commandParameters[i].Direction != ParameterDirection.ReturnValue)
	 {
	 // If the current array value derives from IDataParameter, then assign its Value property
	 if (parameterValues[k] is IDataParameter)
	 {
	 IDataParameter paramInstance;
	 paramInstance = (IDataParameter)parameterValues[k];
	 if (paramInstance.Direction == ParameterDirection.ReturnValue)
	 {
	 paramInstance = (IDataParameter)parameterValues[++k];
	 }
	 if (paramInstance.Value == null)
	 {
	 commandParameters[i].Value = DBNull.Value;
	 }
	 else
	 {
	 commandParameters[i].Value = paramInstance.Value;
	 }
	 }
	 else if (parameterValues[k] == null)
	 {
	 commandParameters[i].Value = DBNull.Value;
	 }
	 else
	 {
	 commandParameters[i].Value = parameterValues[k];
	 }
	 k++;
	 }
	 }
	 }
	 }
	}
评论列表
本站所提供的代码，版权归原作者所有，若有侵犯作者版权，请与我们联系，我们将立即删除或修改。谢谢!
本站所有代码发布及提供者。
试试其它关键字
　SqliteHelper　
同语言下
可能有用的
天楚贡献的其它代码(27)