在 ASPxGridView 中获取 CheckBox.Checked 未正常运行

Question

我在 ASPxGridView 中有这样的复选框：

<dxwgv:ASPxGridView ID="Grid_Loading_Plan_Detail" runat="server" >          
...
<dxwgv:GridViewDataColumn Caption="#" VisibleIndex="1">
<DataItemTemplate>
<dxe:ASPxCheckBox ID="loadingStatus" runat="server" Checked='<%# GetChecked(Eval("loadingStatus").ToString()) %>'></dxe:ASPxCheckBox>
</DataItemTemplate>
</dxwgv:GridViewDataColumn>
...
</dxwgv:ASPxGridView>

加载复选框时绑定得很好，这里是函数:

Public Function GetChecked(value As String) As Boolean
    Select Case value
        Case "1"
            Return True
        Case "0"
            Return False
        Case Else
            Return False
    End Select
End Function

问题是，当检查 checked 状态时，它总是 return 加载的值。如果第一次加载时状态为 checked 然后我执行 unchecked CheckBox，它仍然 return checked。这里我如何获取值并将其保存到数据库：

Protected Sub btSimpan_Click(sender As Object, e As EventArgs) Handles btSimpan.Click
    Try
        sqlstring = ""
        For i As Integer = 0 To Grid_Loading_Plan_Detail.VisibleRowCount - 1
            Dim loadingStatus As DevExpress.Web.ASPxEditors.ASPxCheckBox = Grid_Loading_Plan_Detail.FindRowCellTemplateControl(i, Grid_Loading_Plan_Detail.Columns(1), "loadingStatus")

            sqlstring = sqlstring & " UPDATE containerTransaction SET loadingStatus = '" & IIf(loadingStatus.Checked, "1", "0") & "' " & _
                        " WHERE ID = '" & Grid_Loading_Plan_Detail.GetRowValues(i, "ID") & "'; "
        Next

        If SQLExecuteNonQuery(sqlstring) > 0 Then
            Response.Redirect("loading-plan.aspx")
        End If
    Catch ex As Exception
        Response.Write("Error btSimpan_Click <BR> " & ex.ToString)
    End Try
End Sub

已添加

这是我绑定数据的方式：

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    Try
        If Not Page.IsPostBack Then
            Call Load_menu()
        End If
    Catch ex As Exception
        Response.Write("Page_Load Exception :<br>" & ex.ToString)
    End Try

    If Not Session("Grid_Loading_Plan_Detail") Is Nothing Then
        Grid_Loading_Plan_Detail.DataSource = CType(Session("Grid_Loading_Plan_Detail"), DataTable)
        Grid_Loading_Plan_Detail.DataBind()
    End If
End Sub

这里是 Load_menu() 函数：

Private Sub Load_menu()
    Try
        sqlstring = "SELECT ID, code, date, container, seal, sender, receiver, [weight], loadingStatus " & _
            "FROM containerTransaction " & _
            "WHERE loadingCode = (SELECT TOP 1 code FROM loadingPlan WHERE ID = '" & ID & "') AND [status] = 1 " & _
            "ORDER BY [weight] "
        DS = SQLExecuteQuery(sqlstring)
        DT = DS.Tables(0)
        Session("Grid_Loading_Plan_Detail") = DT
        Grid_Loading_Plan_Detail.DataSource = DT
        Grid_Loading_Plan_Detail.KeyFieldName = "ID"
        Grid_Loading_Plan_Detail.DataBind()
    Catch ex As Exception
        Response.Write("Load_Menu Exception :<br>" & ex.ToString)
    End Try
End Sub

我错过了什么？

Answer 1

这是会话绑定问题，它检查会话是否可用，然后数据源将与之绑定。代码是：

If Not Session("Grid_Loading_Plan_Detail") Is Nothing Then
    Grid_Loading_Plan_Detail.DataSource = CType(Session("Grid_Loading_Plan_Detail"), DataTable)
    Grid_Loading_Plan_Detail.DataBind()
End If

我删除了那个变量，一切正常。

编辑

如果我删除了会话检查器，搜索和排序就会出现问题。通过搜索一些更适合的文章和 ASPxGridView 中的 searching/sorting 功能仍然有效，我有了新的解决方案。

在 init 中调用 load_menu() 函数是这种情况的最佳方法：

Private Sub Page_Init(sender As Object, e As EventArgs) Handles Me.Init
    Call Load_menu()
End Sub

对于这种情况，您可以删除会话变量。如果此解决方案有问题，请告诉我。

在 ASPxGridView 中获取 CheckBox.Checked 未正常运行

Get CheckBox.Checked in ASPxGridView Not Woking Properly

asp.net

aspxgridview

编辑