find datakey name's in gridview event handlers

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1)In row databound
 if (e.Row.RowType == DataControlRowType.DataRow)
                {
                    int datakey = Convert.ToInt32(dgFixtures.DataKeys[e.Row.RowIndex].Value.ToString());
                 
}

if (e.Row.RowType == DataControlRowType.DataRow && GridTeamOfficials.EditIndex == e.Row.RowIndex)
                {
                }

                if (e.Row.RowType == DataControlRowType.DataRow)
                {
                    ImageButton deleteLink = (ImageButton)e.Row.Cells[3].Controls[1];
                    //WebControl deleteLink = (WebControl)e.Row.Cells[3].Controls[0];
                    deleteLink.Attributes.Add("OnClick", "javascript:return CheckforDelete();");
                }
2)Datarowview
DataRowView drv = (DataRowView)e.Row.DataItem;
string Player_Response = drv[""].ToString();

3)in row command
GridViewRow row = (GridViewRow)(((Button)e.CommandSource).NamingContainer);
 int Key = int.Parse(dg.DataKeys[row.RowIndex].Values[1].ToString());

if we r using paging in row command
 int rindex = Convert.ToInt32(e.CommandArgument.ToString());
string MemberKey = GridView1.DataKeys[rindex - (GridView1.PageIndex * GridView1.PageSize)].Value.ToString();

4)Row deleting
GridView1.DataKeys[e.RowIndex].Value.ToString());
 Boolean FixtureCancel = Convert.ToBoolean(DataBinder.Eval(e.Row.DataItem, "Fixture_Canceled"));


5)Row updating
Convert.ToInt32(GridTeamOfficials.DataKeys[e.RowIndex].Value.ToString());


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