我有一个报告,我在VB.Net中生成,正在GridView中显示。数据是根据用户输入的一些约束从SQL中提取的,可以是任何大小,具体取决于这些。我希望能够从网格中获取这些值,并将它们放入CSV中以获取可下载的报告,而无需重新运行我的SQL选择(我知道如何以这种方式构建),最好是以通用的方式,这样可以很容易地重用。 这就是我目前所拥有的。它创建一个CSV,但只有标题存在。
Protected Sub btnExcel_Click(sender As Object, e As EventArgs) Handles btnExcel.Click
Dim strOutput As New StringBuilder
Response.ContentType = "application/csv"
' Remove the charset from the Content-Type header.
Response.Charset = ""
' Turn off the view state.
Me.EnableViewState = False
Response.AddHeader("Content-Disposition", "filename=report.csv;")
strOutput.AppendLine(GetCSVLine(grid.HeaderRow.Cells))
For Each row As GridViewRow In grid.Rows
strOutput.AppendLine(GetCSVLine(row.Cells))
Next
Response.Write(strOutput)
Response.Flush()
Response.End()
End Sub
Private Function GetCSVLine(cells As TableCellCollection) As String
Dim returnValue As String = ""
For Each cell As TableCell In cells
returnValue += cell.Text + ","
Next
Return returnValue
End Function
和aspx页面
<asp:GridView ID="grid" runat="server" EnableModelValidation="True" AutoGenerateColumns = "false">
<Columns>
<asp:TemplateField HeaderText="Name">
<ItemTemplate>
<asp:Label ID="lblName" runat="server" Text='<%# Bind("Name")%>'/>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Location">
<ItemTemplate>
<asp:Label ID="lblLocation" runat="server" Text='<%# Bind("Location")%>'/>
</ItemTemplate>
</asp:TemplateField>
<!-- There are a few more fields after this, using the same structure -->
答案 0 :(得分:0)
抱歉,在这里跑了我的头脑,但我认为因为每行包含一组Label
控件,其中包含文本,所以你不能使用直线cell.Text
反对表格单元格以获取内容。
您可能需要对每行使用FindControl
方法来获取相关控件,然后访问您检索的每个控件的属性以获取您需要在其中推出的数据。 CSV。类似的东西:
For Each row As GridViewRow In grid.Rows
'In each row, find the control which contains the data and then get the text of the control
Dim nameLabel As Label = CType(row.FindControl("lblName"), Label)
Dim nameValue As String = nameLabel.Text
'Once you have all the values, write out the StringBuilder like you are doing already
Next