Gridview:导出到csv问题

时间:2009-11-25 09:40:41

标签: .net excel csv export export-to-excel

我有以下情况。我有两种方法用数据填充GridView。具体如下:

protected void btSearch_Click(object sender, EventArgs e)
{

    lqPackWeights.WhereParameters.Clear();
    ControlParameter cp = new ControlParameter();
    cp.Type = TypeCode.String;


    if (radBuyer.Checked)
    {
        cp.ControlID = "ddlProd";
        cp.PropertyName = "SelectedValue";
        lbRadMiss.Text = "";
    }

    else if (radProd.Checked)
    {
        cp.ControlID = "tbxProdAC";
        cp.PropertyName = "Text";
        lbRadMiss.Text = "";
    }

    else
    {
        cp.ControlID = "lbRadMiss";
        cp.PropertyName = "Text";
        lbRadMiss.Text = "Please check appropriate radio button before you attempt a search";
    }

    cp.Name = "IDDesc";
    lqPackWeights.WhereParameters.Add(cp);
    GridView1.DataSourceID = "lqPackWeights";
    GridView1.DataBind();

}

并且

protected void btnShowPaper_Click(object sender, EventArgs e)
{
    ORWeightsDataClassesDataContext dbPa = new ORWeightsDataClassesDataContext();
    int max = 0;
    if (int.TryParse(txtbxHowMany.Text, out max))
    {
        var queryPa = dbPa.tblOnlineReportingCOMPLETEWeights
                    .Where(x => x.MaterialLevel == "Primary" && x.MaterialText == "Paper" && x.MemberId == "FM00012")
                    .OrderByDescending(x => x.ProductPercentage).Take(max);

        GridView1.DataSource = queryPa;
        GridView1.DataBind();

这两种方法都能很好地用他们的approrpiate数据集填充gridview。

我还有以下代码将gridview内容导出到csv:

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++)
    {
        sb.Append(GridView1.Columns[k].HeaderText + ',');
    }

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

}

导出到csv在第一种情况下(即if / else if场景)运行良好,但是当涉及第二种情况时,只提取标题。

那么这里发生了什么?!我已经添加了几个中断,看起来正在执行导出到csv代码,但是实际的GridView内容没有放在同一个csv文件中。

有什么想法吗?

3 个答案:

答案 0 :(得分:1)

您需要添加一个javascript函数。看看这篇解释它的博客文章:

http://www.inspiredbytechnology.com/index.php/2011/03/09/export-gridview-to-csv-in-a-sharepoint-2010-webpart/

由于

乔恩

答案 1 :(得分:0)

确保在导出之前重新绑定数据。我在一个项目上遇到了同样的问题,因为我们在GridView上关闭了VIEWSTATE,所以在回发时我们试图在网格填充数据之前导出数据。

答案 2 :(得分:0)

我实际上通过删除GridView1.AllowPaging = false解决了这个问题; GridView1.DataBind();来自出口脚本。

不确定它为什么会起作用......但确实如此!