こんにちは私は1行5列のテーブルから始めます。行を追加するためのボタンとバックコードを追加しました。最初の行は正常に表示されますが、その後は2行のままです。ページのデバッグが実行されています。ビューステートについて読んだことがありますが、それが理にかなっている場合は、ビューステートに追加する方法を正確に理解していません。
編集
<asp:UpdatePanel ID="upTable" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="true">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnNewRow" EventName ="click" />
</Triggers>
<ContentTemplate>
<div>
<asp:Table ID="tblPrice" runat="server" GridLines="Both">
<asp:TableRow>
<asp:TableCell>QTY.</asp:TableCell>
<asp:TableCell>MATERIAL</asp:TableCell>
<asp:TableCell>COST</asp:TableCell>
<asp:TableCell>PRICE</asp:TableCell>
<asp:TableCell>TOTAL</asp:TableCell>
</asp:TableRow>
<asp:TableRow>
<asp:TableCell>
<asp:TextBox ID="tbQty1" runat="server" Width="40" Text="0"></asp:TextBox>
</asp:TableCell>
<asp:TableCell>
<asp:TextBox ID="tbMaterial1" runat="server"></asp:TextBox>
</asp:TableCell>
<asp:TableCell>
<asp:TextBox ID="tbCost1" runat="server" OnTextChanged="PriceChange" AutoPostBack ="true" Text="0"></asp:TextBox>
<asp:MaskedEditExtender ID="meeCost1" runat="server" Mask="99,999,999.99" DisplayMoney="Left" TargetControlID="tbCost1" MaskType="Number">
</asp:MaskedEditExtender>
</asp:TableCell>
<asp:TableCell>
<asp:TextBox ID="tbPrice1" runat="server" OnTextChanged="PriceChange" AutoPostBack="true" Text="0"></asp:TextBox>
<asp:MaskedEditExtender ID="meePrice1" runat="server" Mask="99,999,999.99" DisplayMoney="Left" TargetControlID="tbPrice1" MaskType="Number">
</asp:MaskedEditExtender>
</asp:TableCell>
<asp:TableCell>
<asp:Label ID="lblTotal1" runat="server" Text="$0.00"></asp:Label>
</asp:TableCell>
</asp:TableRow>
</asp:Table>
</div>
</ContentTemplate>
</asp:UpdatePanel>
<asp:Button ID="btnNewRow" runat="server" Text="Add Row" />
vb
Protected Sub btnNewRow_Click(sender As Object, e As EventArgs) Handles btnNewRow.Click
Dim TRow As New TableRow()
Dim qtyCell As New TableCell()
Dim materialCell As New TableCell()
Dim costCell As New TableCell()
Dim priceCell As New TableCell()
Dim totalCell As New TableCell()
Dim qtyTB As New TextBox()
Dim materialTB As New TextBox()
Dim costTB As New TextBox()
Dim priceTB As New TextBox()
Dim costMEE As New AjaxControlToolkit.MaskedEditExtender
Dim priceMEE As New AjaxControlToolkit.MaskedEditExtender
Dim rowsCount As Integer = tblPrice.Rows.Count
Dim rowsString As String = rowsCount.ToString
qtyTB.Width = 40
'configure the masked edit extender controls
With costMEE
.ID = "meeCost" & rowsString
.Mask = "99,999,999.99"
.DisplayMoney = AjaxControlToolkit.MaskedEditShowSymbol.Left
.TargetControlID = "tbCost" & rowsString
.MaskType = AjaxControlToolkit.MaskedEditType.Number
End With
With priceMEE
.ID = "meePrice" & rowsString
.Mask = "99,999,999.99"
.DisplayMoney = AjaxControlToolkit.MaskedEditShowSymbol.Left
.TargetControlID = "tbPrice" & rowsString
.MaskType = AjaxControlToolkit.MaskedEditType.Number
End With
'Add masked edit extender to textboxes
costTB.Controls.Add(costMEE)
priceTB.Controls.Add(priceMEE)
'add id names to the textboxes
qtyTB.ID = "tbQty" & rowsString
materialTB.ID = "tbMaterial" & rowsString
costTB.ID = "tbCost" & rowsString
priceTB.ID = "tbPrice" & rowsString
'Add textbox to the table cells
qtyCell.Controls.Add(qtyTB)
materialCell.Controls.Add(materialTB)
costCell.Controls.Add(costTB)
priceCell.Controls.Add(priceTB)
'Add table cells to the table row
TRow.Cells.Add(qtyCell)
TRow.Cells.Add(materialCell)
TRow.Cells.Add(costCell)
TRow.Cells.Add(priceCell)
TRow.Cells.Add(totalCell)
'Add table row to the table
tblPrice.Rows.Add(TRow)
End Sub