How to check checkbox in gridview row based on the another girdview row value

Hi @Shashikant,

Thank you very much for this code.

this one is more useful for me.

but will you please clear this is correct or not 

public void compareGridview()
    {
        //DataTable dtSelectedUsers = new DataTable();
        string userName = string.Empty;
        string userName2 = string.Empty;
        string userId = string.Empty;
        string userId2 = string.Empty;
        #region comment row

       
        foreach (GridViewRow srow in grdSearchUsers.Rows)
        {
            if (srow.RowType == DataControlRowType.DataRow)
            {
                Label lblUserName2 = (srow.Cells[0].FindControl("lblUserName") as Label);
                HiddenField hdnUserId2 = (srow.Cells[0].FindControl("hdnUserId") as HiddenField);
                userName2 = lblUserName2.Text.ToString();
                userId2 = hdnUserId2.Value.ToString();
                foreach (GridViewRow row in grdUser.Rows)
                {
                    if (row.RowType == DataControlRowType.DataRow)
                    {

                        //  this.mpe.Show();
                        // BindUser();               

                        CheckBox chkRow = (row.Cells[0].FindControl("chkAction") as CheckBox);
                        Label lblUserName = (row.Cells[0].FindControl("lblUserName") as Label);
                        HiddenField hdnUserId = (row.Cells[0].FindControl("hdnUserId") as HiddenField);
                        userName = lblUserName.Text.ToString();
                        userId = hdnUserId.Value.ToString();

                        if (userId.Contains(userId2))
                        {

                            chkRow.Checked = true;

                        }
                    }
                }
            }
           
        }


        
        #endregion
    }

becoz i have found that

foreach (GridViewRow row in grdUser.Rows) { **if (row.RowType == DataControlRowType.DataRow)

this line is skipped when i was debuging.

will you please find this for me. Thank you in advance

regards by cywa