Question

在ASP.NET 4.0 GridView中，是否可以同时在编辑模式下拥有多行？

我在属性中使用编辑模式控制行：

Private Property Editing As List(Of Integer)
   Get
       If ViewState("Editing") Is Nothing Then ViewState("Editing") = New List(Of Integer)
       Return CType(ViewState("Editing"), List(Of Integer))
   End Get
   Set(value As List(Of Integer))
       ViewState("Editing") = value
   End Set
End Property

当用户点击编辑按钮时填充它：

Protected Sub GridView1_RowCommand(sender As Object, e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles GridView1.RowCommand
    If e.CommandName = "Edit" Then
        Dim row = CType(CType(e.CommandSource, LinkButton).NamingContainer, GridViewRow)
        Editing.Add(row.RowIndex)
    End If
End Sub

在RowDataBound事件中手动更改RowState属性：

Protected Sub GridView1_RowDataBound(sender As Object, e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound
    If e.Row.RowType = DataControlRowType.DataRow Then
        If Editing.Contains(e.Row.RowIndex) Then
            Then e.Row.RowState = DataControlRowState.Edit
        End If
    End If
End Sub

但它没有用，行正在呈现正常状态......任何想法？

编辑2：财产

MultipleEditGridView.vb：

Namespace ClubeCheckIn.UI

        Public Class MultipleEditGridView
            Inherits GridView

            Protected Property IsRowInEditMode(rowIndex As Int32) As Boolean
                Get
                    If ViewState("GridRowEditIndices") Is Nothing Then
                        Return False
                    Else
                        Dim indices = DirectCast(ViewState("GridRowEditIndices"), List(Of Int32))
                        Return indices.Contains(rowIndex)
                    End If
                End Get
                Set(value As Boolean)
                    If ViewState("GridRowEditIndices") Is Nothing Then
                        ViewState("GridRowEditIndices") = New List(Of Int32)
                    End If
                    Dim indices = DirectCast(ViewState("GridRowEditIndices"), List(Of Int32))
                    indices.Remove(rowIndex)
                    indices.Add(rowIndex)
                End Set
            End Property

        End Class

    End Namespace

的web.config：

<controls>
    <add tagPrefix="clube" namespace="ClubeCheckIn.UI" />
</controls>

ASPX：

<clube:MultipleEditGridView ID="GridView1" runat="server">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:TextBox ID="txtEdit" runat="server" Visible="<%# IsRowInEditMode(Container.DataItemIndex) %>" />
            </ItemTemplate>
    </Columns>
</clube:MultipleEditGridView>

ERROR：

错误：BC30451：未声明'IsRowInEditMode'。由于保护水平，它可能无法实现

Answer 1

我非常确定GridView在编辑模式下不支持多行。

作为一种解决方法，您可以将ItemTemplate用于两种状态（例如，Label和TextBox。然后，您可以使用EditMode作为参数的属性RowIndex。您可以在ViewState。

中以编辑模式存储行

（未经测试）

Protected Property IsRowInEditMode(rowIndex As Int32) As Boolean
    Get
        If ViewState("GridRowEditIndices") Is Nothing Then
            Return False
        Else
            Dim indices = DirectCast(ViewState("GridRowEditIndices"), List(Of Int32))
            Return indices.Contains(rowIndex)
        End If
    End Get
    Set(value As Boolean)
        If ViewState("GridRowEditIndices") Is Nothing Then
            ViewState("GridRowEditIndices") = New List(Of Int32)
        End If
        Dim indices = DirectCast(ViewState("GridRowEditIndices"), List(Of Int32))
        indices.Remove(rowIndex)
        indices.Add(rowIndex)
    End Set
End Property

你可以直接从标记中调用它，例如。对于编辑控件：

Visible='<%# IsRowInEditMode(Container.DataItemIndex) %>

Answer 2

你可以使用这个有效的击球手......

   Get
        If ViewState("GridRowEditIndices") Is Nothing Then
            Return False
        Else
            Dim indices = DirectCast(ViewState("GridRowEditIndices"), List(Of Int32))
            Return indices.Contains(rowIndex)
        End If
    End Get
    Set(value As Boolean)
        If ViewState("GridRowEditIndices") Is Nothing Then
            ViewState("GridRowEditIndices") = New List(Of Int32)
        End If
        Dim indices = DirectCast(ViewState("GridRowEditIndices"), List(Of Int32))
        indices.Remove(rowIndex)
        indices.Add(rowIndex)
    End Set
End Property

ASP.NET GridView多个编辑行同时

2 个答案: