Question

我很想知道是否可以将String.Format与以下内联标记一起使用：

<asp:RequiredFieldValidator ControlToValidate="tbTest" Text="<%$ Resources:ErrorMsg, E3032  %>" runat="server" />

像这样

<asp:RequiredFieldValidator ControlToValidate="tbTest" Text='<%= String.Format(<%$ Resources:ErrorMsg, E3032  %>, "Other Text to insert")' runat="server" />

我知道你不能那样做，但这只是为了拍照。

TX

Answer 1

资源绑定语法仅限于接受两个参数：资源容器的名称和资源键。

您可以使用数据绑定

<asp:RequiredFieldValidator 
       ControlToValidate="tbTest" 
       Text='<%# String.Format(
                     Convert.ToString(GetGlobalResourceObject("ErrorMsg", "E3032"), 
                     System.Globalization.CultureInfo.CurrentCulture),
                         "Other Text to insert") %>'
        />

如果控件不是数据绑定控件的子代，则可能需要调用tbTest.DataBind（）。

Answer 2

我最终为此目的创建了自己的表达式：

web.config：

<expressionBuilders>
  <add expressionPrefix="CreerMsgErreur" type="MsgErreurs, App_Code" /> 
</expressionBuilders>

.aspx：

<asp:RequiredFieldValidator ID="RequiredFieldValidator2" ControlToValidate="tbdDateFin"
 CssClass="test" Text="<%$ CreerMsgErreur:E3033, insert, date %>"
 ErrorMessage="<%$ CreerMsgErreur:E3033, insert, date %>"
 runat="server" EnableClientScript="true" SetFocusOnError="true" />

.vb：

Imports System
Imports System.CodeDom
Imports System.Linq
Imports System.Security.Permissions
Imports System.Web
Imports System.Web.Compilation
Imports System.Web.UI

<ExpressionPrefix("Reflect")> _
<AspNetHostingPermission(SecurityAction.InheritanceDemand, Level:=AspNetHostingPermissionLevel.Minimal)> _
<AspNetHostingPermission(SecurityAction.LinkDemand, Level:=AspNetHostingPermissionLevel.Minimal)> _
Public Class MsgErreurs
    Inherits ExpressionBuilder

    Public Overrides Function GetCodeExpression(ByVal entry As System.Web.UI.BoundPropertyEntry, ByVal parsedData As Object, ByVal context As System.Web.Compilation.ExpressionBuilderContext) As System.CodeDom.CodeExpression
        If parsedData IsNot Nothing Then
            Return New CodePrimitiveExpression(CType(parsedData, MsgErreursParse).ToString())
        End If

        Return New CodePrimitiveExpression("Erreur de l'expression")
    End Function

    Public Overrides Function ParseExpression(ByVal expression As String, ByVal propertyType As System.Type, ByVal context As System.Web.Compilation.ExpressionBuilderContext) As Object

        Dim leMsgErreur As MsgErreursParse = Nothing

        If Not String.IsNullOrEmpty(expression) Then
            leMsgErreur = New MsgErreursParse(expression)
        Else
            Throw New HttpException(String.Format("Message de l'expression MsgErreur vous devez entrer une expression."))
        End If

        Return leMsgErreur
    End Function

    Private Class MsgErreursParse
        Private mNoErreur As String
        Private mParametres As String

        Public Property NoErreur() As String
            Get
                Return mNoErreur
            End Get
            Set(ByVal value As String)
                mNoErreur = value
            End Set
        End Property

        Public Property Parametres() As String
            Get
                Return mParametres
            End Get
            Set(ByVal value As String)
                mParametres = value
            End Set
        End Property

        Public Sub New(ByVal parametres As String)
            Try
                mNoErreur = parametres.Substring(0, parametres.IndexOf(",")).Trim()
                mParametres = parametres.Substring(parametres.IndexOf(",") + 1).Trim()
            Catch ex As ArgumentOutOfRangeException
                mNoErreur = parametres
            Catch ex As Exception

            End Try

            If String.IsNullOrEmpty(mNoErreur) Then
                Throw New HttpException(String.Format("Message de l'expression MsgErreur : vous devez spécifier un code d'erreur ou les paramètres ne sont pas dans le bon format : {0}", parametres))
            End If
        End Sub

        Public Sub New(ByVal noErreur As String, ByVal parametres As String)
            mNoErreur = noErreur
            mParametres = parametres
        End Sub

        Public Overrides Function ToString() As String
            Try
                If String.IsNullOrEmpty(Parametres) Then
                    Return Convert.ToString(HttpContext.GetGlobalResourceObject("MsgErreurs", NoErreur), System.Globalization.CultureInfo.CurrentCulture)
                Else
                    Return String.Format(Convert.ToString(HttpContext.GetGlobalResourceObject("MsgErreurs", NoErreur), System.Globalization.CultureInfo.CurrentCulture), Parametres.Split(",").Select(Function(s) s.Trim()).ToArray())
                End If
            Catch ex As Exception
                Throw New HttpException(String.Format("Message de l'expression MsgErreur : impossible de créer le message d'erreur : NoErreur : {0}, Parametres : {1}", NoErreur, Parametres))
            End Try
        End Function
    End Class

End Class

带有String.Format的ASP .NET表达式（内联标记）

2 个答案: