默认情况下，如何生成类型为“文本”而不​​是“常规”的Excel文件

Question

I'm working on c# project where I'm generating dynamic excel file from my gridview.

when I successfully generate the file it is converting all data into Genaral type but I need that all excel file data into Text format,

How can I do that? As I need to use this file further for reporting purpose and need Text as type

Following is my excel file generation c# code :

private void ExportGridView()
        {
            System.IO.StringWriter sw = new System.IO.StringWriter();
            System.Web.UI.HtmlTextWriter htw = new System.Web.UI.HtmlTextWriter(sw);

            // Render grid view control.
            gvFiles.RenderControl(htw);

            // Write the rendered content to a file.
            string renderedGridView = sw.ToString();
            File.WriteAllText(@"C:\test\ExportedFile.xls", renderedGridView);
        }

I think I need to use Microsoft.Office.Interop.Excel and I can specify Type also like to generate in Text

Also I searched like we can generate it as a like html contain and make it excel something like that.

can anyone help me?

Answer 1

You can use Microsoft.Office.Interop.Excel . Add a reference to it and add the following using statement beside the other using statements.

using Microsoft.Office.Interop.Excel;

Modify the ExportGridView method:

private void ExportGridView()
{
    var path = @"C:\test\ExportedFile.xls";
    System.IO.StringWriter sw = new System.IO.StringWriter();
    System.Web.UI.HtmlTextWriter htw = new System.Web.UI.HtmlTextWriter(sw);

    // Render grid view control.
    gvFiles.RenderControl(htw);

    // Write the rendered content to a file.
    string renderedGridView = sw.ToString();
    File.WriteAllText(path, renderedGridView);
    UpdateFormat(path);
}

Add the following method:

private void UpdateFormat(string path)
{
    var application = new Microsoft.Office.Interop.Excel.Application();
    var doc = application.Workbooks.Open(path);
    for (int i = 1; i <= doc.Worksheets.Count; i++)
    {
        Worksheet sheet = doc.Worksheets[i];
        for (int j = 1; j <= sheet.Columns.Count; j++)
        {
            Range column = sheet.Columns[j];
            column.NumberFormat = "@";
        }
    }
    doc.Save();
    doc.Close();
    application.Quit();
}

Answer 2

Just a guess, but its because you're writing the gridview html? You can just create a CSV file and save it with .xls and it'll be an excel document