我的格式中有一个gridview。第一次在pageload中通过调用函数“FillgridFileExpenses()”来加载gridview。
Sub FillgridFileExpenses()
If txtInvFileNo.Text = String.Empty Then
objinvoiceT.intfileID = 0
Else
objinvoiceT.intfileID = Convert.ToInt32(txtInvFileNo.Text)
End If
temptab1 = objinvoiceT.selFileExpensesView()
temptab1.Columns.Add("AllInRate")
If (temptab1.Rows.Count > 0) Then
GridViewInvoiceT.DataSource = temptab1
dtInvoice = temptab1
'dtInvoice.Columns.Add("AllInRate")
GridViewInvoiceT.DataBind()
GridViewInvoiceT.Columns.Item(10).Visible = True
Else
temptab1.Rows.Add(temptab1.NewRow())
GridViewInvoiceT.DataSource = temptab1
dtInvoice = temptab1
GridViewInvoiceT.DataBind()
Dim TotalColumns As Integer
TotalColumns = GridViewInvoiceT.Rows(0).Cells.Count
GridViewInvoiceT.Rows(0).Cells.Clear()
GridViewInvoiceT.Rows(0).Cells.Add(New TableCell())
GridViewInvoiceT.Rows(0).Cells(0).ColumnSpan = TotalColumns
If txtInvFileNo.Text = String.Empty Then
GridViewInvoiceT.Rows(0).Cells(0).Text = "No Record Found, Must Select a File Number "
Else
GridViewInvoiceT.Rows(0).Cells(0).Text = "No Record Found For File Number : " + " " + txtInvFileNo.Text
End If
End If
End Sub
在上面的代码中,我使用了一个名为dtInvoice的数据表。无论我在gridview事件中做了什么改变,比如删除或更新或添加一个新行,所有这些都应该反映在dtInvoice而不是data.Iam得到dtInvoice更新事件,但在删除 dtInvoice没有行并且收到错误。以下是我的更新和删除代码
Protected Sub GridViewInvoiceT_RowUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewUpdateEventArgs) Handles GridViewInvoiceT.RowUpdating
cmbChargeName = CType(GridViewInvoiceT.Rows(e.RowIndex).FindControl("cmbChargeName"), DropDownList)
cmbInvCurency = CType(GridViewInvoiceT.Rows(e.RowIndex).FindControl("cmbInvCurency"), DropDownList)
txtInvoiceNo1 = CType(GridViewInvoiceT.Rows(e.RowIndex).FindControl("txtInvoiceNo1"), TextBox)
txtInvoiceDate1 = CType(GridViewInvoiceT.Rows(e.RowIndex).FindControl("txtInvoiceDate1"), TextBox)
txtInvAmount1 = CType(GridViewInvoiceT.Rows(e.RowIndex).FindControl("txtInvAmount1"), TextBox)
txtInvExRate1 = CType(GridViewInvoiceT.Rows(e.RowIndex).FindControl("txtInvExRate1"), TextBox)
txtInvRemarks1 = CType(GridViewInvoiceT.Rows(e.RowIndex).FindControl("txtInvRemarks1"), TextBox)
cmbAllinRight = CType(GridViewInvoiceT.Rows(e.RowIndex).FindControl("ddAllInRate"), DropDownList)
Dim lblAllInRate As Label = CType(GridViewInvoiceT.Rows(e.RowIndex).FindControl("lblAllInRate"), Label)
objinvoiceT.intfileID = Convert.ToInt32(txtInvFileNo.Text)
dtInvoice.Rows(e.RowIndex).Item("AllInRate") = cmbAllinRight.SelectedItem
dtInvoice.Rows(e.RowIndex).Item("ChargeName") = cmbChargeName.SelectedItem
dtInvoice.Rows(e.RowIndex).Item("InvoiceNo") = txtInvoiceNo1.Text
If txtInvoiceDate1.Text = String.Empty Then
dtInvoice.Rows(e.RowIndex).Item("InvoiceDate") = Convert.ToDateTime("1/1/1800")
Else
dtInvoice.Rows(e.RowIndex).Item("InvoiceDate") = Convert.ToDateTime(txtInvoiceDate1.Text)
End If
dtInvoice.Rows(e.RowIndex).Item("Currency") = cmbInvCurency.SelectedItem
dtInvoice.Rows(e.RowIndex).Item("InvAmount") = txtInvAmount1.Text
dtInvoice.Rows(e.RowIndex).Item("InvExRate") = txtInvExRate1.Text
dtInvoice.Rows(e.RowIndex).Item("InvRemarks") = txtInvRemarks1.Text
GridViewInvoiceT.EditIndex = -1
GridViewInvoiceT.DataSource = dtInvoice
GridViewInvoiceT.DataBind()
FillInvoice()
End Sub
Protected Sub GridViewInvoiceT_RowDeleting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewDeleteEventArgs) Handles GridViewInvoiceT.RowDeleting
dtInvoice.Rows.Remove(GridViewInvoiceT.DataKeys(e.RowIndex).Value)
GridViewInvoiceT.DataSource = dtInvoice
GridViewInvoiceT.DataBind()
End Sub
End Sub Sub FillInvoice()
GridViewInvoiceT.DataSource = dtInvoice
GridViewInvoiceT.DataBind()
End Sub
任何人都可以通过我在删除时更新所做的反映变化来帮助获取dtInvoice吗?
答案 0 :(得分:1)
在GridViewInvoiceT_RowDeleting方法中,更改;
dtInvoice.Rows.Remove(GridViewInvoiceT.DataKeys(e.RowIndex).Value)
在DataRow上使用'删除'方法。
删除 - 删除数据表的行,导致数据提供者不再注意该行。通过使用delete,您标记要删除的行,因此您的提供者代码会注意到删除,并请求从数据库中删除该行。