我有從GridView導出數據到csv的代碼。它適用於其他網站,但不適用於我正在開發的最新版本。導出的CSV文件爲空
GridView綁定在後面的代碼中的DataTable。以下是綁定提取並將數據綁定到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();
}
以下是按鈕單擊事件從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();
}
}
請諮詢導出數據。
添加一個斷點並逐步執行代碼。 myTable實際上是否有任何行? – 2012-02-04 09:58:15
@Kadajski是的。它有10行。我做了斷點,並且For循環列被跳過,但不是行。 – 2012-02-04 10:05:31
從myTable導出而不是gridView。 – 2012-02-04 10:15:02