private void SetInitRowitm()
{
DataTable dt = new DataTable();
DataRow dr = null;
dt.Columns.Add(new DataColumn("ITEMS", typeof(string)));
dt.Columns.Add(new DataColumn("DESCRIPTIONS", typeof(string)));
dt.Columns.Add(new DataColumn("QTY", typeof(string)));
dt.Columns.Add(new DataColumn("UNIT", typeof(string)));
dt.Columns.Add(new DataColumn("REMARKS", typeof(string)));
dr = dt.NewRow();
dr["ITEMS"] = string.Empty;
dr["DESCRIPTIONS"] = string.Empty;
dr["QTY"] = string.Empty;
dr["UNIT"] = string.Empty;
dr["REMARKS"] = string.Empty;
dt.Rows.Add(dr);
//Store the DataTable in ViewState
ViewState["dt_adItm"] = dt;
GVCNItm.DataSource = dt;
GVCNItm.DataBind();
}
private void AddNewRow()
{
int rowIndex = 0;
if (ViewState["dt_adItm"] != null)
{
DataTable dt = (DataTable)ViewState["dt_adItm"];
DataRow drRow = null;
if (dt.Rows.Count > 0)
{
for (int i = 1; i <= dt.Rows.Count; i++)
{
//extract the TextBox values
DropDownList ddl_Itm = (DropDownList)GVCNItm.Rows[rowIndex].Cells[0].FindControl("ddl_Itm");
TextBox TbaddPurItmDscptin = (TextBox)GVCNItm.Rows[rowIndex].Cells[1].FindControl("TbaddPurItmDscptin");
TextBox TbAddPurItmQty = (TextBox)GVCNItm.Rows[rowIndex].Cells[2].FindControl("TbAddPurItmQty");
TextBox TbAddPurUnit = (TextBox)GVCNItm.Rows[rowIndex].Cells[3].FindControl("TbAddPurUnit");
TextBox TBDCNRmk = (TextBox)GVCNItm.Rows[rowIndex].Cells[4].FindControl("TBDCNRmk");
drRow = dt.NewRow();
dt.Rows[i - 1]["ITEMS"] = ddl_Itm.SelectedValue;
dt.Rows[i - 1]["DESCRIPTIONS"] = TbaddPurItmDscptin.Text;
dt.Rows[i - 1]["QTY"] = TbAddPurItmQty.Text;
dt.Rows[i - 1]["UNIT"] = TbAddPurUnit.Text;
dt.Rows[i - 1]["REMARKS"] = TBDCNRmk.Text;
rowIndex++;
ddl_Itm.Focus();
}
dt.Rows.Add(drRow);
ViewState["dt_adItm"] = dt;
GVCNItm.DataSource = dt;
GVCNItm.DataBind();
}
}
else
{
Response.Write("ViewState is null");
}
//Set Previous Data on Postbacks
SetPreRowitm();
}
protected void GVCNItm_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
if (ViewState["dt_adItm"] != null)
{
DataTable dt = (DataTable)ViewState["dt_adItm"];
DataRow drCurrentRow = null;
int rowIndex = Convert.ToInt32(e.RowIndex);
if (dt.Rows.Count > 1)
{
dt.Rows.Remove(dt.Rows[rowIndex]);
drCurrentRow = dt.NewRow();
ViewState["dt_adItm"] = dt;
GVCNItm.DataSource = dt;
GVCNItm.DataBind();
SetPreRowitm();
}
}
}