FindControl GridTemplateColumn Outside of radGrid Events with out using foreach statement

FindControl GridTemplateColumn Outside of radGrid Events with out using
foreach statement

Find Control Grid Template Column Outside of rad Grid Events with out
using for each statement.I am using for each mean all the value inserted
.I will insert particular row Only
below my code foreach (GridItem item in gvStudents.MasterTableView.Items)
{ if (item is GridItem) { // GridItem cmdItem =
gvStudents.MasterTableView.Items;
GridDataItem dataItem = (GridDataItem)item;
TextBox txtRemark = (TextBox)item.FindControl("txtRemarks");
// TextBox txtRemark =
(TextBox)this.gvStudents.FindControl("txtRemarks");
objPatient.Remarks = txtRemark.Text;
objPatient.UID =
_common.Utility.ToString(this.gvStudents.MasterTableView.Items[dataItem.ItemIndex].GetDataKeyValue("UID"));
int returnval = objPatient.InsertRemarks();
}}