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【Asp.Net】 gridview嵌套DropDownList選定值

作者:dezai / 发布于2014/7/23/ 653


	gridview嵌套DropDownList選定值
	有三種方法：
	aspx:
	 <asp:TemplateField HeaderText="狀態" SortExpression="state">
	 <ItemStyle ForeColor="Gray" />
	 <ItemTemplate>
	 <asp:Label ID="labstate" runat="server" Text='<%# (Eval("state").ToString() == "0") ? "已體檢" : "已合格"%>'></asp:Label>
	 </ItemTemplate>
	 <EditItemTemplate>
	 <asp:HiddenField ID="hdstate" runat="server" Value='<%# Eval("state") %>' />
	 <asp:DropDownList ID="ddlstate" runat="server">
	 <asp:ListItem Value="0">已體檢</asp:ListItem>
	 <asp:ListItem Value="1">不合格</asp:ListItem>
	 </asp:DropDownList>
	 </EditItemTemplate>
	 </asp:TemplateField>
	cs:
	 protected void myGridView_RowDataBound(object sender, GridViewRowEventArgs e)
	 {
	 if (e.Row.RowIndex != -1)
	 {
	 int orderID = this.myGridView.PageIndex * this.myGridView.PageSize + e.Row.RowIndex + 1;
	 e.Row.Cells[0].Text = orderID.ToString();
	 }

	 if (((DropDownList)e.Row.FindControl("ddlstate")) != null)
	 {
	 DropDownList ddlstate = (DropDownList)e.Row.FindControl("ddlstate");
	 //ddlstate.SelectedValue = ((HiddenField)e.Row.FindControl("hdstate")).Value;
	 //ddlstate.Items.FindByValue(((HiddenField)e.Row.FindControl("hdstate")).Value).Selected = true;
	 SetSelectedItem(ddlstate, ((HiddenField)e.Row.FindControl("hdstate")).Value);
	 }
	 }
	 private void SetSelectedItem(ListControl list, String value)
	 {
	 foreach (ListItem e in list.Items)
	 if (e.Value == value)
	 {
	 e.Selected = true;
	 return;
	 }
	 else
	 e.Selected = false;
	 }

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　DropDownList　　gridview　

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