Hi,

I need to upload Excel File and then read and import its data into DataSet or DataTable using C# in ASP.Net Web Application.

The imported Excel File data is then displayed in ASP.Net GridView control.

The column "AV" contains these values

But in gridview output I have

protected void btnUpload_Click(object sender, EventArgs e)
{
    if (FileUpload1.HasFile)
    {
        Master.PleaseWait();
        string FileName = Path.GetFileName(FileUpload1.PostedFile.FileName);
        string Extension = Path.GetExtension(FileUpload1.PostedFile.FileName);
        string FolderPath = ConfigurationManager.AppSettings["FolderPath"];
        string FilePath = Server.MapPath(FolderPath + FileName);
        FileUpload1.SaveAs(FilePath);
        Import_To_Grid(FilePath, Extension, rbHDR.SelectedItem.Text);
    }
}
 
private void Import_To_Grid(string FilePath, string Extension, string isHDR)
{
    string conStr = "";
 
    switch (Extension)
    {
        case ".xls":
            conStr = ConfigurationManager.ConnectionStrings["Excel03ConString"].ConnectionString;
            break;
 
        case ".xlsx":
            conStr = ConfigurationManager.ConnectionStrings["Excel07ConString"].ConnectionString;
            break;
    }
 
    conStr = String.Format(conStr, FilePath, isHDR);
    OleDbConnection connExcel = new OleDbConnection(conStr);
    OleDbCommand cmdExcel = new OleDbCommand();
    OleDbDataAdapter oda = new OleDbDataAdapter();
 
    DataTable dt = new DataTable();
    cmdExcel.Connection = connExcel;
    connExcel.Open();
    DataTable dtExcelSchema;
    dtExcelSchema = connExcel.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
    string SheetName = dtExcelSchema.Rows[0]["TABLE_NAME"].ToString();
    connExcel.Close();
 
    connExcel.Open();
    cmdExcel.CommandText = "SELECT * From[" + SheetName + "]";
    oda.SelectCommand = cmdExcel;
    oda.Fill(dt);
    connExcel.Close();
 
    GridView1.Caption = Path.GetFileName(FilePath);
    GridView1.DataSource = dt;
    GridView1.DataBind();
}