Asp.net 使用VB.NET将Gridview导出到Excel_Asp.net_Vb.net_Excel_Gridview

Asp.net 使用VB.NET将Gridview导出到Excel

asp.net vb.net excel gridview

Asp.net 使用VB.NET将Gridview导出到Excel,asp.net,vb.net,excel,gridview,Asp.net,Vb.net,Excel,Gridview,我有一个带有gridview的页面，它使用的是母版页。导出按钮位于母版页上，我只需要从中导出实际页面上的gridview数据 gridview上有一些隐藏列，这些列不能包含在导出到Excel的数据中如何在不获取gridview周围（即页面本身）的任何其他格式的情况下做到这一点我基本上是在使用这个URL上的代码：我转换为VB.NET，但它似乎正在将网格上的所有数据导出到Excel，包括隐藏的列。我已经搜索了一段时间的解决方案。我以前看过你的代码，但我似乎无法让它工作——但这是因为缺乏知识。因此

我有一个带有gridview的页面，它使用的是母版页。导出按钮位于母版页上，我只需要从中导出实际页面上的gridview数据

gridview上有一些隐藏列，这些列不能包含在导出到Excel的数据中

如何在不获取gridview周围（即页面本身）的任何其他格式的情况下做到这一点

我基本上是在使用这个URL上的代码：我转换为VB.NET，但它似乎正在将网格上的所有数据导出到Excel，包括隐藏的列。

我已经搜索了一段时间的解决方案。我以前看过你的代码，但我似乎无法让它工作——但这是因为缺乏知识。因此，对于其他可能遇到同样问题的人，这是我的方案和解决方案，请注意，这是在VB中，可以使用任何在线转换工具进行转换：

场景：我有一个带有导出按钮的母版页，该按钮使用母版页从页面上的gridview导出数据

在Gridview页面的Page_Load事件中，我使用了以下代码：然后我创建了public sub：

然后添加以下内容：

Public Overrides Sub VerifyRenderingInServerForm(control As Control)
End Sub

不幸的是，这意味着它需要进入您希望导出gridview的每个页面，但它为我完成了这项工作。这仅导出gridview中的数据

我希望这能帮助那些有同样问题的人。

我实际上找到了另一种方法，它不影响页面本身，只需要在母版页上完成

公共覆盖子验证RenderingInServerFormControl，因为不需要控件：

'在母版页中导出单击事件：

Public Sub ButExportExcel_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles ButExportExcel.Click

'*** take the paging and sorting out of the excel spreadsheet

Try
Dim sgv As GridView = CType(ContentPlaceHolder_body.FindControl("SummaryGridView"), GridView)
        If (sgv IsNot Nothing) Then
            sgv.AllowPaging = False
            sgv.AllowSorting = False
            sgv.DataBind()
        End If

        Dim sExportFileName As String = ""

        sExportFileName = Path.GetFileName(Request.PhysicalPath)
        sExportFileName = sExportFileName.Substring(0, sExportFileName.Length - 5) & ".xls"

        Export2(sExportFileName, sgv)

Catch ex As Exception

End Try

End Sub

'Export Sub
Public Sub Export2(ByVal fileName As String, ByVal gv As GridView)
    Dim sExportFileName As String = ""
    Dim sStringToReplace As String = ""

    gv.HeaderStyle.ForeColor = Drawing.Color.Black
    gv.HeaderStyle.BackColor = Drawing.Color.White
    gv.RowStyle.BackColor = Drawing.Color.White
    gv.HeaderStyle.Font.Bold = True
    gv.HeaderStyle.Font.Size = 10

    sExportFileName = Path.GetFileName(Request.PhysicalPath)
    sExportFileName = sExportFileName.Substring(0, sExportFileName.Length - 5) & ".xls"

    Dim attachment As String = "attachment; filename=" & sExportFileName
    HttpContext.Current.Response.ClearContent()
    HttpContext.Current.Response.AddHeader("content-disposition", attachment)
    HttpContext.Current.Response.ContentType = "application/ms-excel"
    Dim stw As New StringWriter()
    Dim htextw As New HtmlTextWriter(stw)

    Dim parent As Control = gv.Parent
    Dim GridIndex As Integer = 0
    If parent IsNot Nothing Then
        GridIndex = parent.Controls.IndexOf(gv)
        parent.Controls.Remove(gv)
    End If

    gv.RenderControl(htextw)

    If parent IsNot Nothing Then
        parent.Controls.AddAt(GridIndex, gv)
    End If

    'gv.RenderControl(htextw)
    HttpContext.Current.Response.Write(stw.ToString())
    Dim fi As New FileInfo(Server.MapPath("../JumpStart.css"))
    Dim sb As New System.Text.StringBuilder()
    Dim sr As StreamReader = fi.OpenText()
    'sStringToReplace = "class=""generalheader"""
    While sr.Peek() >= 0
        sb.Append(sr.ReadLine())
    End While
    sr.Close()

    Dim outputHtml = "<html><head><style type='text/css'>" + sb.ToString() + "</style></head>" + stw.ToString() + "</html>"

    Response.Write(outputHtml.ToString)

    'Response.Write("<html><head><style type='text/css'>" + sb.ToString() + "</style></head>" + stw.ToString() + "</html>")
    stw = Nothing
    htextw = Nothing
    Response.Flush()
    Response.[End]()


End Sub

2019年，该公司的职能部门和职能部门可能会发生冲突

PARA VB.NET

专用子代交换机

    Dim excel As Microsoft.Office.Interop.Excel.Application = New Microsoft.Office.Interop.Excel.Application()
    excel.Application.Workbooks.Add(True)
    Dim ColumnIndex As Integer = 0
    For Each col As DataGridViewColumn In GrillaReporte.Columns
        ColumnIndex += 1
        excel.Cells(1, ColumnIndex) = col.Name

    Next

    Dim rowIndex As Integer = 0
    For Each row As DataGridViewRow In GrillaReporte.Rows

        rowIndex += 1
        ColumnIndex = 0
        For Each col As DataGridViewColumn In GrillaReporte.Columns

            ColumnIndex += 1
            excel.Cells(rowIndex + 1, ColumnIndex) = row.Cells(col.Name).Value

        Next


    Next

    excel.Visible = True


End Sub

C段

私有无效GenerarExcel {

请用英语写你的答案。

Public Sub ButExportExcel_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles ButExportExcel.Click

'*** take the paging and sorting out of the excel spreadsheet

Try
Dim sgv As GridView = CType(ContentPlaceHolder_body.FindControl("SummaryGridView"), GridView)
        If (sgv IsNot Nothing) Then
            sgv.AllowPaging = False
            sgv.AllowSorting = False
            sgv.DataBind()
        End If

        Dim sExportFileName As String = ""

        sExportFileName = Path.GetFileName(Request.PhysicalPath)
        sExportFileName = sExportFileName.Substring(0, sExportFileName.Length - 5) & ".xls"

        Export2(sExportFileName, sgv)

Catch ex As Exception

End Try

End Sub

'Export Sub
Public Sub Export2(ByVal fileName As String, ByVal gv As GridView)
    Dim sExportFileName As String = ""
    Dim sStringToReplace As String = ""

    gv.HeaderStyle.ForeColor = Drawing.Color.Black
    gv.HeaderStyle.BackColor = Drawing.Color.White
    gv.RowStyle.BackColor = Drawing.Color.White
    gv.HeaderStyle.Font.Bold = True
    gv.HeaderStyle.Font.Size = 10

    sExportFileName = Path.GetFileName(Request.PhysicalPath)
    sExportFileName = sExportFileName.Substring(0, sExportFileName.Length - 5) & ".xls"

    Dim attachment As String = "attachment; filename=" & sExportFileName
    HttpContext.Current.Response.ClearContent()
    HttpContext.Current.Response.AddHeader("content-disposition", attachment)
    HttpContext.Current.Response.ContentType = "application/ms-excel"
    Dim stw As New StringWriter()
    Dim htextw As New HtmlTextWriter(stw)

    Dim parent As Control = gv.Parent
    Dim GridIndex As Integer = 0
    If parent IsNot Nothing Then
        GridIndex = parent.Controls.IndexOf(gv)
        parent.Controls.Remove(gv)
    End If

    gv.RenderControl(htextw)

    If parent IsNot Nothing Then
        parent.Controls.AddAt(GridIndex, gv)
    End If

    'gv.RenderControl(htextw)
    HttpContext.Current.Response.Write(stw.ToString())
    Dim fi As New FileInfo(Server.MapPath("../JumpStart.css"))
    Dim sb As New System.Text.StringBuilder()
    Dim sr As StreamReader = fi.OpenText()
    'sStringToReplace = "class=""generalheader"""
    While sr.Peek() >= 0
        sb.Append(sr.ReadLine())
    End While
    sr.Close()

    Dim outputHtml = "<html><head><style type='text/css'>" + sb.ToString() + "</style></head>" + stw.ToString() + "</html>"

    Response.Write(outputHtml.ToString)

    'Response.Write("<html><head><style type='text/css'>" + sb.ToString() + "</style></head>" + stw.ToString() + "</html>")
    stw = Nothing
    htextw = Nothing
    Response.Flush()
    Response.[End]()


End Sub

    Dim excel As Microsoft.Office.Interop.Excel.Application = New Microsoft.Office.Interop.Excel.Application()
    excel.Application.Workbooks.Add(True)
    Dim ColumnIndex As Integer = 0
    For Each col As DataGridViewColumn In GrillaReporte.Columns
        ColumnIndex += 1
        excel.Cells(1, ColumnIndex) = col.Name

    Next

    Dim rowIndex As Integer = 0
    For Each row As DataGridViewRow In GrillaReporte.Rows

        rowIndex += 1
        ColumnIndex = 0
        For Each col As DataGridViewColumn In GrillaReporte.Columns

            ColumnIndex += 1
            excel.Cells(rowIndex + 1, ColumnIndex) = row.Cells(col.Name).Value

        Next


    Next

    excel.Visible = True


End Sub

        Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();

        excel.Application.Workbooks.Add(true);

        int ColumnIndex = 0;

        foreach (DataGridViewColumn col in GrillaArticulos.Columns)
        {
            ColumnIndex++;

            excel.Cells[1, ColumnIndex] = col.Name;

        }

        int rowIndex = 0;

        foreach (DataGridViewRow row in GrillaArticulos.Rows)
        {

            rowIndex++;

            ColumnIndex = 0;

            foreach (DataGridViewColumn col in GrillaArticulos.Columns)
            {

                ColumnIndex++;

                excel.Cells[rowIndex + 1, ColumnIndex] = row.Cells[col.Name].Value;

            }

        }

        excel.Visible = true;


    }