Jun 24, 2011
Exporting DataTable to CSV File Format in C#.net
protected void Button1_Click(object sender, EventArgs e)
{
string strConn = ConfigurationManager.ConnectionStrings["ConnectionString"].ToString();
SqlConnection conn = new SqlConnection(strConn);
SqlDataAdapter da = new SqlDataAdapter("select * from employees", conn);
DataSet ds = new DataSet();
da.Fill(ds, "Emp");
GridView1.DataSource = ds.Tables["Emp"].DefaultView;
GridView1.DataBind();
DataTable dt = ds.Tables["Emp"];
CreateCSVFile(dt, "c:\\csvData.csv");
}
public void CreateCSVFile(DataTable dt, string strFilePath)
{
#region Export Grid to CSV
// Create the CSV file to which grid data will be exported.
StreamWriter sw = new StreamWriter(strFilePath, false);
// First we will write the headers.
//DataTable dt = m_dsProducts.Tables[0];
int iColCount = dt.Columns.Count;
for (int i = 0; i < iColCount; i++)
{
sw.Write(dt.Columns[i]);
if (i < iColCount - 1)
{
sw.Write(",");
}
}
sw.Write(sw.NewLine);
// Now write all the rows.
foreach (DataRow dr in dt.Rows)
{
for (int i = 0; i < iColCount; i++)
{
if (!Convert.IsDBNull(dr[i]))
{
sw.Write(dr[i].ToString());
}
if (i < iColCount - 1)
{
sw.Write(",");
}
}
sw.Write(sw.NewLine);
}
sw.Close();
#endregion
}
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