How to get header name in autogenerated GridView
Question
How to get the header name in an autogenerated GridView in a Button click event.header column must not be same..all the time..
So depending upon the column header we have to process further. Please help to find the column header.
We are finding the rowindex by below code
var rowIndex = ((GridViewRow)((Control)sender).NamingContainer).RowIndex;
like this. So how to find the column index of a GridView when a link button is clicked inside the GridView ?
'
string dt1 = txtFromDate.Text;
string d1, d5 = "", d3 = "", d4 = "", date, d6, service_Date;
if (dt1 != "")
{
d1 = dt1;
if (d1.Contains("."))
{
string[] word = d1.Split('.');
d5 = word[0];
d3 = word[1];
d4 = word[2];
}
else if (d1.Contains("-"))
{
string[] word = d1.Split('-');
d5 = word[0];
d3 = word[1];
d4 = word[2];
}
else if (d1.Contains("/"))
{
string[] word = d1.Split('/');
d5 = word[0];
d3 = word[1];
d4 = word[2];
}
date = d4 + "/" + d3 + "/" + d5;
service_Date = d5 + "-" + d3 + "-" + d4;
}
else
{
date = "";
service_Date = "";
}
string dt2 = txtToDate.Text;
string t1, t5 = "", t3 = "", t4 = "", d2, t6, serv;
if (dt1 != "")
{
t1 = dt2;
if (t1.Contains("."))
{
string[] word = t1.Split('.');
t5 = word[0];
t3 = word[1];
t4 = word[2];
}
else if (t1.Contains("-"))
{
string[] word = t1.Split('-');
t5 = word[0];
t3 = word[1];
t4 = word[2];
}
else if (t1.Contains("/"))
{
string[] word = t1.Split('/');
t5 = word[0];
t3 = word[1];
t4 = word[2];
}
d2 = t4 + "/" + t3 + "/" + t5;
serv = t5 + "-" + t3 + "-" + t4;
//d5 = d3 + "/" + d6 + "/" + d4 ;
}
else
{
d2 = "";
serv = "";
}
dttest.Columns.Add("MACHINENAME_DATE");
ArrayList Array_machine = new ArrayList();
using (con = new SqlConnection(con_str))
{
con.Open();
string qry;
qry = "select distinct mname from tb_reqmach where fromdate>='" + date + "' and todate<='" + d2 + "' and mcfact='" + drpfact.Text + "' group by mname ";
cmd = new SqlCommand(qry, con);
dr = cmd.ExecuteReader();
while (dr.Read())
{
Array_machine.Add(dr["mname"].ToString().Trim());
//dttest.Rows.Add();
dttest.Rows.Add(dr["mname"].ToString().Trim());
}
con.Close();
}
ArrayList Array_L = new ArrayList();
DateTime startDate = Convert.ToDateTime(date);
Array_L.Add(startDate.ToString("MM-dd-yyyy"));
dttest.Columns.Add(startDate.ToShortDateString());
DateTime endDate = Convert.ToDateTime(d2);
while (startDate < endDate)
{
startDate = startDate.AddDays(1);
Array_L.Add(startDate.ToString("MM-dd-yyyy"));
dttest.Columns.Add(startDate.ToShortDateString());
}
DataTable dt = new DataTable();
int m = 0;
for (int j = 0; j < Array_L.Count; j++)
{
int avail = 0;
int planned = 0;
int req = 0;
for (int d = 0; d < Array_machine.Count; d++)
{
//dttest.Columns.Add();
// dttest.Columns.Add();
// xlworksheet.Cells[4 + d, 1] = Array_machine[d];
// dttest.Rows.Add();
string machine_name = Array_machine[d].ToString();
string Date = Array_L[j].ToString();
// xlworksheet.Cells[3, m + 2] = Date;
//DataColumn[] keyColumns = new DataColumn[1];
//keyColumns[0] = dttest.Columns["MACHINENAME/DATE"];
//dttest.PrimaryKey = keyColumns;
//if (dttest.Rows.Contains(machine_name))
//{
//}
//else
//{
//dttest.Rows.Add(machine_name);
//}
// dttest.Rows[d][1] = Array_machine[d];
// [xlworksheet].Interior.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Red);
// xlworksheet.Range["A3", m + 2].Interior.Color = System.Drawing.ColorTranslator.FromHtml("#99CCFF");
// dt.Columns.Add(machine_name);
using (con = new SqlConnection(con_str))
{
con.Open();
string qry1;
//qry = "select distinct mname from tb_reqmach where mcfact='" + drpfact.Text + "' group by mname ";
qry1 = "select count(mcdesp) as mcdesp from machine where mcdesp='" + Array_machine[d].ToString().Trim() + "' and mcfact='" + drpfact.Text + "' ";
cmd = new SqlCommand(qry1, con);
dr = cmd.ExecuteReader();
if (dr.Read())
{
// xlworksheet.Cells[dtcount + 1, m + 7] = dr["mcdesp"].ToString().Trim();
avail = Convert.ToInt32(dr["mcdesp"].ToString().Trim());
}
con.Close();
con.Open();
string qry;
qry = "SELECT sum(rmachine) as mname FROM tb_reqmach WHERE '" + Array_L[j].ToString() + "' BETWEEN fromdate AND todate and mname='" + Array_machine[d].ToString().Trim() + "' and mcfact='" + drpfact.Text + "'";
cmd = new SqlCommand(qry, con);
dr = cmd.ExecuteReader();
if (dr.Read())
{
// dttest.Rows.Add();
//xlworksheet.Columns[i].ColumnWidth = 18;
// xlworksheet.Cells[d + 4, 2 + m] = dr["mname"].ToString().Trim();
dttest.Rows[d][j + 1] = dr["mname"].ToString().Trim();
if (dr["mname"].ToString().Trim() != "")
{
planned = Convert.ToInt32(dr["mname"].ToString().Trim());
req = avail - planned;
int rows = d + 4;
int cols = 2 + m;
// string rowA = FindResA(rows);
// string colB = FindResB(cols);
if (req < 0)
{
// xlworksheet.Range[colB + rows, colB + rows].Interior.Color = System.Drawing.ColorTranslator.FromHtml("#ff0000");
}
else
{
// xlworksheet.Range[colB + rows, colB + rows].Interior.Color = System.Drawing.ColorTranslator.FromHtml("#008000");
}
}
// dttest.Rows[d][m+1] = dr["mname"].ToString().Trim();
// xlworksheet.Columns.AutoFit();
// gvtest.HeaderRow.Cells(d).Text = dr["mname"].ToString().Trim();
//dt.Rows.Add();
// dt.Rows[d][machine_name] = dr["mname"].ToString().Trim();
}
con.Close();
}
}
m++;
// gvtest.DataSource = dt;
// gvtest.DataBind();
//ID = (i + 1).ToString();
// string machine_name = Array_machine[j].ToString();
// xlworksheet.Cells[4 + i, 1] = ID;
// xlworksheet.Cells[4 + i, 2] = machine_name;
// xlworksheet.Cells[3, m + 2] = machine_name;
//
}
Session["dttest"] = dttest;
GridView4.DataSource = dttest;
GridView4.DataBind();
for (int j = 0; j < Array_L.Count; j++)
{
int avail = 0;
int planned = 0;
int req = 0;
for (int d = 0; d < Array_machine.Count; d++)
{
//dttest.Columns.Add();
// dttest.Columns.Add();
// xlworksheet.Cells[4 + d, 1] = Array_machine[d];
// dttest.Rows.Add();
string machine_name = Array_machine[d].ToString();
string Date = Array_L[j].ToString();
// xlworksheet.Cells[3, m + 2] = Date;
//DataColumn[] keyColumns = new DataColumn[1];
//keyColumns[0] = dttest.Columns["MACHINENAME/DATE"];
//dttest.PrimaryKey = keyColumns;
//if (dttest.Rows.Contains(machine_name))
//{
//}
//else
//{
//dttest.Rows.Add(machine_name);
//}
// dttest.Rows[d][1] = Array_machine[d];
// [xlworksheet].Interior.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Red);
// xlworksheet.Range["A3", m + 2].Interior.Color = System.Drawing.ColorTranslator.FromHtml("#99CCFF");
// dt.Columns.Add(machine_name);
using (con = new SqlConnection(con_str))
{
con.Open();
string qry1;
//qry = "select distinct mname from tb_reqmach where mcfact='" + drpfact.Text + "' group by mname ";
qry1 = "select count(mcdesp) as mcdesp from machine where mcdesp='" + Array_machine[d].ToString().Trim() + "' and mcfact='" + drpfact.Text + "' ";
cmd = new SqlCommand(qry1, con);
dr = cmd.ExecuteReader();
if (dr.Read())
{
// xlworksheet.Cells[dtcount + 1, m + 7] = dr["mcdesp"].ToString().Trim();
avail = Convert.ToInt32(dr["mcdesp"].ToString().Trim());
}
con.Close();
con.Open();
string qry;
qry = "SELECT sum(rmachine) as mname FROM tb_reqmach WHERE '" + Array_L[j].ToString() + "' BETWEEN fromdate AND todate and mname='" + Array_machine[d].ToString().Trim() + "' and mcfact='" + drpfact.Text + "'";
cmd = new SqlCommand(qry, con);
dr = cmd.ExecuteReader();
if (dr.Read())
{
// dttest.Rows.Add();
//xlworksheet.Columns[i].ColumnWidth = 18;
// xlworksheet.Cells[d + 4, 2 + m] = dr["mname"].ToString().Trim();
// dttest.Rows[d][j + 1] = dr["mname"].ToString().Trim();
if (dr["mname"].ToString().Trim() != "")
{
planned = Convert.ToInt32(dr["mname"].ToString().Trim());
req = avail - planned;
int rows = d + 4;
int cols = 2 + m;
// string rowA = FindResA(rows);
// string colB = FindResB(cols);
if (req < 0)
{
GridView4.Rows[d].Cells[j + 1].BackColor = Color.Red;
}
else
{
}
}
}
con.Close();
}
}
m++;
}
foreach (GridViewRow gr in GridView4.Rows)
{
// LinkButton hp = new LinkButton();
for (int k = 1; k < dttest.Columns.Count; k++)
{
LinkButton hp = new LinkButton();
if (gr.Cells[k].Text != "")
{
hp.Text = gr.Cells[k].Text;
//defsur_Click(sender, e);
//GridViewRow gvr = e.Row;
//var rowIndex = ((GridViewRow)((Control)sender).NamingContainer).RowIndex;
//Label username = (Label)GridView3.Rows[rowIndex].FindControl("machinename");
//mcname = username.Text;
// hp.Attributes.Add("onclick", "Gridview4_linkclick");
hp.Click += new EventHandler(Gridview4_linkclick);
// hp.NavigateUrl = "~/Default.aspx?name=" + hp.Text;
gr.Cells[k].Controls.Add(hp);
}
}
}
GridView4.Columns[0].Visible = false;'
1 answers
solution1
0 2016-12-09 10:21:04
You can use this snippet. It loops all the cells in the row the clicked button is in and tries to find the correct column.
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
//get the control that fired the method
Control control = e.CommandSource as Control;
//get the row containing the control
GridViewRow gvr = control.NamingContainer as GridViewRow;
//get the row number
int rowNumber = gvr.RowIndex;
//declare the column variable
int columnNumber = -1;
//loop all the columns in the gridview
for (int i = 0; i < GridView1.Columns.Count; i++)
{
//try to find the button that was clicked in each individual cell
Button button = GridView1.Rows[rowNumber].Cells[i].FindControl(control.ID) as Button;
//if the button is found set the column number
if (button != null)
{
columnNumber = i;
}
}
//get the column name
Label1.Text = GridView1.HeaderRow.Cells[columnNumber].Text;
}
GridView example
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="true" OnRowCommand="GridView1_RowCommand">
<Columns>
<asp:TemplateField HeaderText="Header 1">
<ItemTemplate>
<asp:Button ID="Button1" runat="server" Text="Button" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
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