void clear()
{
GridUniqeGstin.DataSource = null;
GridUniqeGstin.DataBind();
GridGroupFilter.DataSource = null;
GridGroupFilter.DataBind();
grdGSTR2AData.DataSource = null;
grdGSTR2AData.DataBind();
ViewState["AllData"] = null;
PnlAlldata.Visible = false;
}
protected void GridGroupFilter_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "GSTINDetail")
{
pnlUniqe.Visible = true;
string gstin = e.CommandArgument.ToString();
DataTable tblFiltered = new DataTable();
DataTable dtall = new DataTable();
dtall = (DataTable)ViewState["AllData"];
tblFiltered = dtall.AsEnumerable().Where(r => r.Field <string>("PurchGSTIN") == gstin)
.CopyToDataTable(); // Filter(unique) group Zone wise
GridUniqeGstin.DataSource = tblFiltered;
GridUniqeGstin.DataBind();
}
}