我想读取我从DevExpress的XtrapivotGrid获得的Stream。我可以将它保存在计算机中,但我想要的是将它保存在我的数据集中名为dataset1的表中。 现在,我有那个允许保存目录Temp:。
的代码Using FS As New IO.FileStream("D:\Temp\qqc.layout", IO.FileMode.Create)
PivotGridControl1.SaveLayoutToStream(FS)
End Using
Dim read As New System.IO.FileStream("D:\Temp\qqc.layout", IO.FileMode.Open, IO.FileAccess.Read)
DataSet1.LayoutMainRapport.ReadXml(read)
DataSet1.AcceptChanges()
read.Close()
表LayoutMainRapport有3列:
流的输出是xml。
提前感谢!
答案 0 :(得分:1)
我相信您应该将保存的布局转换为字符串,然后将此字符串保存到数据库中(当然,您可以从数据库字符串值中加载此布局):
Private Function SaveLayoutToString(ByVal dxControl As DevExpressControl) As String
Using ms As MemoryStream = New MemoryStream()
dxControl.SaveLayoutToStream(ms)
Return Convert.ToBase64String(ms.ToArray())
End Using
End Function
Private Sub RestoreLayoutFromString(ByVal dxControl As DevExpressControl, ByVal layout As String)
If String.IsNullOrEmpty(layout) Then
Return
End If
Using ms As MemoryStream = New MemoryStream(Convert.FromBase64String(layout))
dxControl.RestoreLayoutFromStream(ms)
End Using
End Sub
这里DevExpressControl dxControl
是支持保存和加载布局的DevExpress控件(XtraPivotGrid,XtraGrid,XtraLayoutControl等)。
答案 1 :(得分:1)
我只需要保存xml的名称并将其保存到我的数据集中。
Dim saveDialog As SaveLayout = New SaveLayout
If saveDialog.ShowDialog() = Windows.Forms.DialogResult.OK Then
Dim read As New IO.MemoryStream
PivotGridControl1.SaveLayoutToStream(read)
read.Position = 0
Dim lecteur As New IO.StreamReader(read)
Dim ligne As DataRow = DataSet1.LayoutMainRapport.NewRow()
ligne("Nom") = saveDialog.txtNom.Text
ligne("Contenu") = lecteur.ReadToEnd()
DataSet1.LayoutMainRapport.Rows.Add(ligne)
LayoutMainRapportTableAdapter.Update(DataSet1)
End If