我有从GridView导出数据到csv的代码。它适用于其他网站,但不适用于我正在开发的最新版本。导出的CSV文件为空
GridView绑定在后面的代码中的DataTable。以下是绑定提取并将数据绑定到GridView的事件。
private void bindGridView()
{
//Fetching data from DB goes here
myTable.Columns.Add("type", typeof(int));
myTable.Columns.Add("rate", typeof(int));
foreach (DataRow rows in myTable.Rows)
{
if (rows["dst"].ToString() == "1875")
{
rows["type"] = 1;
rows["rate"] = 500;
rows.AcceptChanges();
}
else if (rows["dst"].ToString() == "1876")
{
rows["type"] = 0;
rows["rate"] = 30;
rows.AcceptChanges();
}
}
gridViewData.DataSource = myTable;
gridViewData.AllowPaging = true;
gridViewData.PageSize = 10;
gridViewData.DataBind();
}
以下是按钮单击事件从GridView的
protected void btnExportCDR_Click(object sender, EventArgs e)
{
if (gridViewData.Rows.Count == 0)
{
lblStatus.Text = "Data is empty. Can not export CDR. Please check your filtering dates.";
}
else
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=CDRMMCC_" + System.DateTime.Now.ToShortDateString() + ".csv");
Response.Charset = "";
Response.ContentType = "application/text";
bindGridView();
gridViewData.AllowPaging = false;
StringBuilder sb = new StringBuilder();
//I did a trace here, gridViewData.Columns.Count is 0. That's why it got skipped, I think.
for (int k = 0; k < gridViewData.Columns.Count; k++)
{
sb.Append(gridViewData.Columns[k].HeaderText + ",");
}
sb.Append("\r\n");
for (int i = 0; i < gridViewData.Rows.Count; i++)
{
for (int k = 0; k < gridViewData.Columns.Count; k++)
{
sb.Append(gridViewData.Rows[i].Cells[k].Text + ",");
}
sb.Append("\r\n");
}
Response.Output.Write(sb.ToString());
Response.Flush();
Response.End();
}
}
请咨询导出数据。
添加一个断点并逐步执行代码。 myTable实际上是否有任何行? – 2012-02-04 09:58:15
@Kadajski是的。它有10行。我做了断点,并且For循环列被跳过,但不是行。 – 2012-02-04 10:05:31
从myTable导出而不是gridView。 – 2012-02-04 10:15:02