Hai,
I have a doubt in gridview.I get the values from the datasource and put it in a gridview with insert,update,delete operations.After that i want to convert this gridview into csv format.I tried but I got only the heading field that occured in gridview is coming.Other fields are not coming.Below I has send that code.plz rectify it.
//Default.aspx//
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
<br />
<br />
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
onrowcancelingedit="GridView1_RowCancelingEdit"
onrowdeleting="GridView1_RowDeleting" onrowediting="GridView1_RowEditing"
onrowupdating="GridView1_RowUpdating">
<columns>
<asp:CommandField HeaderText="Edit-Update" ShowEditButton="True" />
<asp:BoundField DataField="ID" HeaderText="ID" ReadOnly="True" />
<asp:BoundField DataField="NAME" HeaderText="NAME" />
<asp:BoundField DataField="AGE" HeaderText="AGE" />
<asp:BoundField DataField="PLACEOFBIRTH" HeaderText="PLACEOFBIRTH" />
<asp:CommandField HeaderText="Delete" ShowDeleteButton="True" />
</columns>
<br />
<asp:Button ID="Button2" runat="server" onclick="Button2_Click" Text="Export to csv" />
</div>
</form>
</body>
</html>
//Default.aspx.cs//
using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
using System.Text;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
binddata();
}
}
private void binddata()
{
SqlConnection con = new SqlConnection("Data Source=MACFEESERVER;Initial Catalog=ePO_LENOVO;User ID=sa;Password=sa");
SqlDataAdapter ada = new SqlDataAdapter("select ID,NAME,AGE,PLACEOFBIRTH from RAJ", con);
DataTable dt = new DataTable();
ada.Fill(dt);
GridView1.DataSource = dt;
GridView1.DataBind();
}
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
SqlConnection con = new SqlConnection("Data Source=MACFEESERVER;Initial Catalog=ePO_LENOVO;User ID=sa;Password=sa");
SqlCommand cmd = new SqlCommand();
cmd.CommandText = "delete from RAJ where ID=@ID";
cmd.Parameters.Add("@ID", SqlDbType.Int).Value = Convert.ToInt32(GridView1.Rows[e.RowIndex].Cells[1].Text);
cmd.Connection = con;
con.Open();
cmd.ExecuteNonQuery();
con.Close();
binddata();
}
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
binddata();
}
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
binddata();
}
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
if (((LinkButton)GridView1.Rows[0].Cells[0].Controls[0]).Text == "Insert")
{
SqlConnection con = new SqlConnection("Data Source=MACFEESERVER;Initial Catalog=ePO_LENOVO;User ID=sa;Password=sa");
SqlCommand cmd = new SqlCommand();
cmd.CommandText = "insert into RAJ(NAME,AGE,PLACEOFBIRTH)values(@NAME,@AGE,@PLACEOFBIRTH)";
cmd.Parameters.Add("@NAME", SqlDbType.VarChar).Value = ((TextBox)GridView1.Rows[0].Cells[2].Controls[0]).Text;
cmd.Parameters.Add("@AGE", SqlDbType.Int).Value = ((TextBox)GridView1.Rows[0].Cells[3].Controls[0]).Text;
cmd.Parameters.Add("@PLACEOFBIRTH", SqlDbType.VarChar).Value = ((TextBox)GridView1.Rows[0].Cells[4].Controls[0]).Text;
cmd.Connection = con;
con.Open();
cmd.ExecuteNonQuery();
con.Close();
}
else
{
SqlConnection con = new SqlConnection("Data Source=MACFEESERVER;Initial Catalog=ePO_LENOVO;User ID=sa;Password=sa");
SqlCommand cmd = new SqlCommand();
cmd.CommandText ="update RAJ set NAME=@NAME,AGE=@AGE,PLACEOFBIRTH=@PLACEOFBIRTH where ID=@ID";
cmd.Parameters.Add("@NAME", SqlDbType.VarChar).Value = ((TextBox)GridView1.Rows[e.RowIndex].Cells[2].Controls[0]).Text;
cmd.Parameters.Add("@AGE", SqlDbType.Int).Value = ((TextBox)GridView1.Rows[e.RowIndex].Cells[3].Controls[0]).Text;
cmd.Parameters.Add("@PLACEOFBIRTH", SqlDbType.VarChar).Value = ((TextBox)GridView1.Rows[e.RowIndex].Cells[4].Controls[0]).Text;
cmd.Parameters.Add("@ID",SqlDbType.Int).Value =Convert.ToInt32(GridView1.Rows[e.RowIndex].Cells[1].Text);
cmd.Connection = con;
con.Open();
cmd.ExecuteNonQuery();
con.Close();
}
GridView1.EditIndex = -1;
binddata();
}
protected void Button1_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection("Data Source=MACFEESERVER;Initial Catalog=ePO_LENOVO;User ID=sa;Password=sa");
SqlDataAdapter ada = new SqlDataAdapter("select ID,NAME,AGE,PLACEOFBIRTH from RAJ", con);
DataTable dt = new DataTable();
ada.Fill(dt);
DataRow dr = dt.NewRow();
dt.Rows.InsertAt(dr, 0);
GridView1.EditIndex = 0;
GridView1.DataSource = dt;
GridView1.DataBind();
((LinkButton)GridView1.Rows[0].Cells[0].Controls[0]).Text = "Insert";
}
protected void Button2_Click(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.csv");
Response.Charset = "";
Response.ContentType = "application/text";
GridView1.AllowPaging = false;
GridView1.DataBind();
StringBuilder sb = new StringBuilder();
for (int k = 0; k < GridView1.Columns.Count; k++)
{
sb.Append(GridView1.Columns[k].HeaderText + ',');
}
sb.Append("\r\n");
for (int i = 0; i < GridView1.Rows.Count; i++)
{
for (int k = 0; k < GridView1.Columns.Count; k++)
{
sb.Append(GridView1.Rows[i].Cells[k].Text + ',');
}
sb.Append("\r\n");
}
Response.Output.Write(sb.ToString());
Response.Flush();
Response.End();
}
}
Submit an article or tip