我试图在rowdataBound()事件中从gridview中删除一行但是获取过程或函数delete_row指定了太多参数。 以下是代码
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if ((e.Row != null) && (e.Row.RowType == DataControlRowType.DataRow))
{
for (int i = 0; i < GridView1.Rows.Count; i++ )
{
GridView1.Rows[i].Attributes["style"] += "cursor: pointer; cursor: hand;";
if (GridView1.DataKeys[i].Values[1].ToString() != "broken")
GridView1.Rows[i].Attributes["onclick"] =
"window.open('" + GridView1.DataKeys[i].Values[0].ToString() + "','open_window', 'menubar, toolbar, location, directories, status, scrollbars, resizable, dependent, width=640, height=480, left=0, top=0')";
else
{
GridView1.DeleteRow(i);
}
}
}
HTML标记在下面,我有3个DataKeyNames声明是问题
<asp:HiddenField ID="hiddenField1" runat="server" Value="" />
<br />
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:User42ConnectionString %>"
SelectCommand="lsp_show_by_letter" onselecting="SqlDataSource1_Selecting"
SelectCommandType="StoredProcedure" DeleteCommand="delete_row"
DeleteCommandType="StoredProcedure">
<SelectParameters>
<asp:ControlParameter ControlID="hiddenField1" DefaultValue=" "
Name="letter" PropertyName="Value" Type="String" />
</SelectParameters>
<DeleteParameters>
<asp:ControlParameter Name="link_Id" ControlID="hiddenField1" PropertyName="Value" Type="Int32" />
</DeleteParameters>
</asp:SqlDataSource>
</div>
<asp:GridView ID="GridView1" runat="server" AllowPaging="True"
AllowSorting="True" AutoGenerateColumns="False"
DataSourceID="SqlDataSource1" onrowdatabound="GridView1_RowDataBound"
DataKeyNames="link_url,link_description,link_id">
<Columns>
<asp:BoundField DataField="link_display_string"
HeaderText="link_display_string" SortExpression="link_display_string" />
<asp:BoundField DataField="link_url"Visible="False" />
<asp:BoundField DataField="link_description" Visible="False" />
<asp:BoundField DataField="link_id" ReadOnly="true" Visible="False" />
</Columns>
</asp:GridView>
删除行存储过程
`ALTER PROCEDURE dbo.delete_row @link_Id int AS BEGIN DELETE FROM [links] WHERE ([link_id] = @link_Id) END`
答案 0 :(得分:2)
这是因为您的hiddenfiled没有绑定到SqlDataSource,因此它将空值或空值传递给delete_row过程。由于您将SQLDataSource直接绑定到datagridview,因此需要使用datagridview的选定行值绑定hideenfiled。这应该可以帮助您尝试一些选项,但这是您的基本问题。