ASP.NET 2.0 Nested GridView

Read Text File and Display in Grid View

protected void Page_Load
(object sender, EventArgs e)
{
if (!IsPostBack)
{
string openpath, contents;
int tabsize = 4;
string[] arinfo;
string line;
int i;
DataTable dt = CreateTable();
DataRow row;
try
{
openpath =
Server.MapPath(".") + @"\abhi.txt";
string filename = openpath;
StreamReader st;
st = File.OpenText(filename);
while ((line = st.ReadLine()) != null)
{
contents =
line.Replace(("").PadRight(tabsize, ' '), "\t");
char[] textdelimeter = { ']' };
arinfo = contents.Split(textdelimeter);
for (i = 0; i < arinfo.Length; i++)
{
row = dt.NewRow();
if (i < arinfo.Length)
row["name"] = arinfo[i].ToString().Replace("[", "");
if (i < arinfo.Length)
row["lastname"] = arinfo[i].ToString().Replace("[", "");
dt.Rows.Add(row);
}
i++;

}
st.Close();
GridView1.DataSource = dt;
GridView1.DataBind();
}
catch (Exception ex)
{
Label1.Text = ex.Message;
}


}


}


private DataTable CreateTable()
{
try
{
DataTable table = new DataTable();

// Declare DataColumn and DataRow variables.
DataColumn column;

// Create new DataColumn, set DataType, ColumnName
// and add to DataTable.
column = new DataColumn();
column.DataType = System.Type.GetType("System.String");
column.ColumnName = "name";
table.Columns.Add(column);

// Create second column.
column = new DataColumn();
column.DataType = Type.GetType("System.String");
column.ColumnName = "lastname";
table.Columns.Add(column);


return table;
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
}
}

Delete multifile entry from gridview

AutoGenerateColumns="False"
DataSourceID="SqlDataSource1"
ShowFooter="true">






OnClick="btnDelete_Click"
OnClientClick="return DeleteConfirmation();"/>


HeaderText="ID"
SortExpression="ID" />
HeaderText="Title"
SortExpression="Title" />
HeaderText="Director"
SortExpression="Director" />
HeaderText="Date"
SortExpression="date" />
HeaderText="BoxOfficeTotal"
SortExpression="boxofficetotal" />







create your data source which can be sql , access whatever u want ..........

C# code


using System;
using System.Configuration;
using System.Data;
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.Collections.Specialized;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
string strcon = "Data Source=.;Initial Catalog=pubs;Persist Security Info=True;User ID=sa;Password=sa";
protected void Page_Load(object sender, EventArgs e)
{

}
protected void btnDelete_Click(object sender, EventArgs e)
{
StringCollection idCollection = new StringCollection();
string strID = string.Empty;

//Loop through GridView rows to find checked rows
for (int i = 0; i < GridView1.Rows.Count; i++)
{
CheckBox chkDelete = (CheckBox)
GridView1.Rows[i].Cells[0].FindControl("chkSelect");
if (chkDelete != null)
{
if (chkDelete.Checked)
{
strID = GridView1.Rows[i].Cells[1].Text;
idCollection.Add(strID);
}
}
}

//Call the method to Delete records
DeleteMultipleRecords(idCollection);

// rebind the GridView
GridView1.DataBind();
}
private void DeleteMultipleRecords
(StringCollection idCollection)
{
//Create sql Connection and Sql Command
SqlConnection con = new SqlConnection(strcon);
SqlCommand cmd = new SqlCommand();
string IDs = "";

foreach (string id in idCollection)
{
IDs += id.ToString() + ",";
}
try
{
string strIDs =
IDs.Substring(0, IDs.LastIndexOf(","));
string strSql = "Delete from movie WHERE id in (" + strIDs + ")";
cmd.CommandType = CommandType.Text;
cmd.CommandText = strSql;
cmd.Connection = con;
con.Open();
cmd.ExecuteNonQuery();
}
catch (SqlException ex)
{
string errorMsg = "Error in Deletion";
errorMsg += ex.Message;
throw new Exception(errorMsg);
}
finally
{
con.Close();
}
}
}