Get the Current Selected Row of GridView on a button Click

Question

I want to fetch the DataKey of the Selected Row of GridView on button click.

Answer 1

Use the SelectedDataKey property of the GridView:

DataKey currentKey = myGridView.SelectedDataKey;

Answer 2

I would Personal do it in a Template Field Like so:

    <asp:TemplateField>
     <ItemTemplate>
       //EDIT: after a comment it is suggested that you pass the RowIndex as the command argument which would provide access to the entire row
       <asp:LinkButton ID="btnCopy" runat="server"CausesValidation="False"CommandName="MyCommandButton"CommandArgument='<%# Eval("MyDataKeyOrWhateverIWanteverIWantFromTheBindingSource")%>'>
     </ItemTemplate>
    </asp:TemplateField>

CodeBehind

protect void MyCommandButton(Object sender,CommandArgument e)

{
    int DataKeyOrPK=int32.Parse(e.CommandArgument.ToString());
}

You other option would be:

<asp:gridview id="myGrid" runat="server"
      width=100% datakeynames="Myid"
      autogeneratecolumns=false
      onSelectedIndexChanged="MyEvent">


<asp:templatefield headertext="Choose your dream home">
 <itemtemplate>
  <asp:linkbutton runat="server" commandname="select" text='<%# Eval ( "Whatever" ) %>' />
 </itemtemplate>
</asp:templatefield>

Note the commandname="select" above.

Data-bound controls recognize certain command names and automatically raise and handle the appropriate events for the control. The following command names are recognized: Cancel, Delete, Edit, Insert, New, Page, Select, Sort and Update. Reference

Codebehind

private void MyEvent(Object sender, EventArgs e) 
{
   string id = myGrid.SelectedDataKey.Value.ToString();
}