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这里是我的代码，其中它给的DDL = NULL值：我，当我使用越来越空（的DropDownList）e.Row.FindControl
//event handler to bind the data to the row before rendering the gridview
protected void gridview1_RowDataBound(object sender ,GridViewRowEventArgs e)
{
if ((e.Row.RowType == DataControlRowType.DataRow)&&(e.Row.DataItem!=null))
{
//DropDownList ddlNo = (DropDownList)e.Row.FindControl("ddlNo");
DropDownList ddlNo = (DropDownList)e.Row.FindControl("ddlNo");
if (ddlNo != null)
{
ddlNo.DataSource = Test.GetData();
ddlNo.DataBind();
ddlNo.SelectedValue = gridview1.DataKeys[e.Row.RowIndex].Values[0].ToString();//datakeys are used to retain the value of the no. in edit mode
}
}
}
这里是我的aspx代码：
<asp:GridView ID="gridview1" runat="server" AutoGenerateColumns="false" AutoGenerateDeleteButton="false" AutoGenerateEditButton="false" ShowFooter="true" EmptyDataText="No data available." PagerStyle-HorizontalAlign="Right" AllowPaging="true" AllowSorting="true" GridLines="Vertical" Width="98%" EnableViewState="true" OnRowCancelingEdit="gridview1_RowCancelingEdit" OnRowDataBound="gridview1_RowDataBound" OnRowEditing="gridview1_RowEditing" OnRowUpdating="gridview1_RowUpdating" OnRowCommand="gridview1_RowCommand" OnRowDeleting="gridview1_RowDeleting" DataKeyNames="testID">
<Columns>
<asp:TemplateField HeaderText="Select" HeaderStyle-HorizontalAlign="Left">
<ItemTemplate>
<asp:Label ID="lblSelect" runat="server" Text="Select"></asp:Label>
<%-- <asp:CheckBox ID="chkSelect" runat="server" AutoPostBack="true" OnCheckedChanged="chkSelect_CheckChanged" />--%>
</ItemTemplate>
<HeaderStyle HorizontalAlign="Left" />
</asp:TemplateField>
<asp:BoundField DataField="testID" HeaderText="SearchId" />
<asp:TemplateField HeaderText="Name" HeaderStyle-HorizontalAlign="Left">
<EditItemTemplate>
<asp:TextBox ID="txtName" runat="server" Text='<%#Eval("testDesc") %>' />
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtNewName" runat="server"></asp:TextBox>
</FooterTemplate>
<ItemTemplate>
<asp:Label ID="lblName" runat="server" Text='<%# Bind("testDesc") %>'></asp:Label>
</ItemTemplate>
<HeaderStyle HorizontalAlign="Left" />
</asp:TemplateField>
<asp:TemplateField HeaderText="No." HeaderStyle-HorizontalAlign="Left">
<EditItemTemplate>
<asp:DropDownList ID="ddlNo" runat="server" DataTextField="testNo" DataValueField="testNo" />
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblNo" runat="server" Text='<%# Bind("testNo") %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<asp:DropDownList ID="ddlNewNo" runat="server" DataTextField="testNo" DataValueField="testNo">
</asp:DropDownList>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Edit" ShowHeader="False">
<EditItemTemplate>
<asp:LinkButton ID="linkbt1" runat="server" CausesValidation="true" CommandName="Update" Text="Update">
</asp:LinkButton>
<asp:LinkButton ID="linkbt2" runat="server" CausesValidation="false" CommandName="Cancel" Text="Cancel"></asp:LinkButton>
</EditItemTemplate>
<ItemTemplate>
<asp:LinkButton ID="linkbt1" runat="server" CausesValidation="false" CommandName="Edit" Text="Edit">
</asp:LinkButton>
</ItemTemplate>
<FooterTemplate>
<asp:LinkButton ID="linkbt2" runat="server" CausesValidation="false" CommandName="AddNew" Text="AddNew">
</asp:LinkButton>
</FooterTemplate>
</asp:TemplateField>
<asp:CommandField HeaderText="Delete" ShowDeleteButton="true" ShowHeader="true" />
</Columns>
</asp:GridView>
任何人都可以提供相关的解决方案吗？
它在EditItemTemplate里，所以它会在你的第一个DB空。您是否在点击编辑时检查它？ – gbs 2011-05-26 18:50:08