将 gridview 数据导出到 CSV 文件中

Question

I have a gridview control in ASP.Net 2.0 and i need to export this gridview data into CSV file.

I have bind this gridview with the dataset.After binding the dataset to the gridview i have done some changes in the gridview data like if I got 0 in dataset then i show 0 as "Started" in the gridview and if i got 1 in the dataset then I show 1 as "Not Started" in the gridview.

So, i can't use dataset directly for exporting. What i need is.. i want the code (in c#) that export my gridview data(not dataset's data) into CSV file.

Answer 1

Try following code, i used it already many times. It will export the data directly from gridview to csv file specified in the code.

protected void btnExportCSV_Click(object sender, EventArgs e)
{
    Response.Clear();
    Response.Buffer = true;
    Response.AddHeader("content-disposition",
     "attachment;filename=GridViewExport.csv");
    Response.Charset = "";
    Response.ContentType = "application/text";

    GridView1.AllowPaging = false;
    GridView1.DataBind();

    StringBuilder sb = new StringBuilder();
    for (int k = 0; k < GridView1.Columns.Count; k++)
    {
        //add separator
        sb.Append(GridView1.Columns[k].HeaderText + ',');
    }
    //append new line
    sb.Append("\r\n");
    for (int i = 0; i < GridView1.Rows.Count; i++)
    {
        for (int k = 0; k < GridView1.Columns.Count; k++)
        {
            //add separator
            sb.Append(GridView1.Rows[i].Cells[k].Text + ',');
        }
        //append new line
        sb.Append("\r\n");
    }
    Response.Output.Write(sb.ToString());
    Response.Flush();
    Response.End();
}

for more information visit Here Hope it will help you

Answer 2

First thanks to Devjosh for the good answer which I modified to work with gridviews that have AutoGenerateColumns=true and AllowSorting=true. Plus I stripped out any returned commas from the data to make sure csv file was not corrupted.

private void ExportReport()
{
    // set the resulting file attachment name to the name of the report...
    string fileName = "test";

    Response.Clear();
    Response.Buffer = true;
    Response.AddHeader("content-disposition", "attachment;filename=" + fileName + ".csv");
    Response.Charset = "";
    Response.ContentType = "application/text";

    System.Text.StringBuilder sb = new System.Text.StringBuilder();

    // Get the header row text form the sortable columns
    LinkButton headerLink = new LinkButton();
    string headerText = string.Empty;

    for (int k = 0; k < gvReport.HeaderRow.Cells.Count; k++)
    {
        //add separator
        headerLink = gvReport.HeaderRow.Cells[k].Controls[0] as LinkButton;
        headerText = headerLink.Text;
        sb.Append(headerText + ",");
    }
    //append new line
    sb.Append("\r\n");
    for (int i = 0; i < gvReport.Rows.Count; i++)
    {
        for (int k = 0; k < gvReport.HeaderRow.Cells.Count; k++)
        {
            //add separator and strip "," values from returned content...

            sb.Append(gvReport.Rows[i].Cells[k].Text.Replace(",", "") + ",");
        }
        //append new line
        sb.Append("\r\n");
    }
    Response.Output.Write(sb.ToString());
    Response.Flush();
    Response.End();
}

Answer 3

private void ExportGridToCSV()
        {            
            Response.Clear();
            Response.Buffer = true;
            Response.AddHeader("content-disposition", "attachment;filename=Employee.csv");
            Response.Charset = "";
            Response.ContentType = "application/text";
            GridEmployee.AllowPaging = false;
            GridEmployee.DataBind();

            StringBuilder columnbind = new StringBuilder();
            for (int k = 0; k < GridEmployee.Columns.Count; k++)
            {

                columnbind.Append(GridEmployee.Columns[k].HeaderText + ',');
            }

            columnbind.Append("\r\n");
            for (int i = 0; i < GridEmployee.Rows.Count; i++)
            {
                for (int k = 0; k < GridEmployee.Columns.Count; k++)
                {

                    columnbind.Append(GridEmployee.Rows[i].Cells[k].Text + ',');
                }

                columnbind.Append("\r\n");
            }
            Response.Output.Write(columnbind.ToString());
            Response.Flush();
            Response.End();

        }

Just call this method in a button Click event. For more Code, click the link Export gridview data into CSV file

I hope this helps you. Thanks.