从asp.net的GridView中获取选定的行

Question

I wan to get id from the gridview and using this code

string UserID = ((Label)grdUser.SelectedRow.FindControl("UserID")).ToString(); Gridview code

<asp:TemplateField HeaderText="userID" Visible="False">
                                <ItemTemplate>
                                    <asp:Label ID="UserID" runat="server" Text='<%# Bind("iduser_Detail") %>'></asp:Label>
                                </ItemTemplate>
                            </asp:TemplateField>

Getting error object reference null

please help me

Answer 1

First of all make sure you are writting this in SelectedRow event and then

Most probably you are writting your in wrong event handler.

You seem to be calling it when selecting a row in the grid. Write this code in selectedrow event of grid.

The way you will need to access the label is

string UserID = ((Label)grdUser.SelectedRow.FindControl("UserID")). Text ;

You are missing Text property in the code above.