Show SaveAs dialogbox for downloading CSV File - asp.net

Question

My CSV Code is:--
public void CreateCSVFile(DataTable dt, string strFilePath)
{
StreamWriter sw = new StreamWriter(strFilePath, false);
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]))
{
string email = dr[i].ToString();
bool result = IsEmail(email);
if (result == true)
sw.Write(dr[i].ToString());
}
//if (i < iColCount - 1)
//{
// sw.Write(" , ");
//}
}
sw.Write(sw.NewLine);
}
sw.Close();
}
and on grid_RowCommand() doing this...
if (e.CommandName == "cmdCSV")
{
DataTable dtCSV = new DataTable();
dtCSV = ob.TotalRecord(TableField, TableName);
CreateCSVFile(dtCSV, "c:\\csv file/csv "+TableName+".csv");
lblMsg.Visible = true;
lblMsg.Text = "CSV File Successfully created in C.";
lblMsg.ForeColor = Color.Green;
}
Here CreateCSVFile(dtCSV, "c:\\csv file/csv "+TableName+".csv"); Download CSV File bydefault in c.Here i want to download CSV file in that location where i want to save.How can i do this??Please guide me.
Thanks in advance

Answer 1

Try This
Response.ContentType = "application/ms-excel";
Response.AddHeader("content-disposition", "attachment; filename=XYZ.csv");
string newpath2 = System.Web.HttpContext.Current.Server.MapPath("~//downloadfile//XYZ.csv");
FileStream sourceFile = new FileStream(newpath2, FileMode.Open);
long FileSize;
FileSize = sourceFile.Length;
byte[] getContent = new byte[(int)FileSize];
sourceFile.Read(getContent, 0, (int)sourceFile.Length);
sourceFile.Close();
OR
string filePath = Server.MapPath("~/files/myFileName.csv");
System.IO.FileInfo fileInfo = new System.IO.FileInfo(filePath);
Response.ContentType = "application/octet-stream";
Response.AddHeader("Content-Disposition", string.Format("attachment;filename=\\\"{0}\\\"", filePath));
Response.AddHeader("Content-Length", fileInfo.Length.ToString());
Response.WriteFile(filePath);
Response.End();