将数据从DataTable导出到Excel 2007

Question

Datatable the values are

Stalin-- 001 and Micheal-- 002 . but generating excel i getting output as

While generating into excel the "0" are not coming.how to solve this type of scenerios.

Code:

if (dt.Rows.Count > 0)
{
    string filename = " ExportedData.xls";
    System.IO.StringWriter tw = new System.IO.StringWriter();
    System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);
    DataGrid dgGrid = new DataGrid();
    dgGrid.DataSource = dt;
    dgGrid.DataBind();

    dgGrid.RenderControl(hw);       
    Response.ContentType = "application/vnd.ms-excel";
    Response.AppendHeader("Content-Disposition", "attachment; filename=" + filename + "");
    this.EnableViewState = false;
    Response.Write(tw.ToString());
    Response.End();
}

Answer 1

Thats not a problem with your code. Its an issue with your excel configuration hiding the prefixed zeros.

1.On the Tools menu, click Options, and then click the View tab.

2.Do one of the following:

To display zero (0) values in cells, select the Zero values check box.

To display zero values as blank cells, clear the check box.

Answer 2

You could manually set the content types of your columns in the datatable before linking it to your datagrid.

DataTable dt = new DataTable();
dt.Columns.Add();
dt.Columns[0].DataType = typeof(string);

Answer 3

You could store/update the data in the DataTable to the following format: ="001"

Example:

        DataTable dt = new DataTable();
        dt.Columns.Add("A");
        dt.Columns.Add("B");

        dt.Rows.Add(new object[] { "Name", "No" });
        dt.Rows.Add(new object[] { "Stalin", "=\"001\""});
        dt.Rows.Add(new object[] { "Micheal", "=\"002\"" });