Comment : gérer les exceptions levées par une méthode de service Web

Article
04/22/2008

L'exemple de code suivant, où un client appelle une méthode de service Web, intercepte une SoapException levée par la méthode de service Web. Le client remplit ensuite un tableau HTML avec les propriétés de la SoapException interceptée. Pour plus d'informations sur le traitement des erreurs SOAP reçues par les clients de service Web, consultez Gestion et levée d'exceptions dans les services Web XML.

Exemple

<%@ Import Namespace="System.Web.Services.Protocols" %>
<%@ Import Namespace="System.Xml" %>
<%@ Page Language="vb" %>
<html>
 <head>
 <script runat=server language=vb>
    Sub Page_Load(o As Object, e As EventArgs)
       ' Create a new instance of the Web service class.
       Dim ThrowsSoapException As ThrowSoapException = New _
                 ThrowSoapException()
       Try
         ThrowsSoapException.myThrow()
       Catch myerr As SoapException
            ' Populate the table with the exception details.
            ErrorTable.Rows.Add(BuildNewRow("Fault Code Namespace", _
                                myerr.Code.Namespace))
            ErrorTable.Rows.Add(BuildNewRow("Fault Code Name", _
                                myerr.Code.Name))
            ErrorTable.Rows.Add(BuildNewRow( _
              "SOAP Actor that threw Exception", myerr.Actor))
            ErrorTable.Rows.Add(BuildNewRow("Error Message", _
                                 myerr.Message))
            ErrorTable.Rows.Add(BuildNewRow("Detail", _
                HttpUtility.HtmlEncode(myerr.Detail.OuterXml) )) 
            Return
        End Try
    End Sub 'Page_Load
     
    Function BuildNewRow(Cell1Text As String, Cell2Text As String) _
             As HtmlTableRow
        Dim row As New HtmlTableRow()
        Dim cell1 As New HtmlTableCell()
        Dim cell2 As New HtmlTableCell()
        
        'Set the contents of the two cells.
        cell1.Controls.Add(New LiteralControl(Cell1Text))
        'Add the cells to the row.
        row.Cells.Add(cell1)
        
        cell2.Controls.Add(New LiteralControl(Cell2Text))
        
        'Add the cells to the row.
        row.Cells.Add(cell2)
        Return row
    End Function 'BuildNewRow 
 </script>
 <head>
 <body>
     <table id="ErrorTable" CellPadding=5 CellSpacing=0 Border="1" BorderColor="black"  />
 </body>

<%@ Import Namespace="System.Web.Services.Protocols" %>
<%@ Import Namespace="System.Xml" %>
<%@ Page Language="C#" %>
<html>
 <head>
 <script runat=server language=c#>
 void Page_Load(Object o, EventArgs e){
 
   // Create a new instance of the Web service proxy class.
   ThrowSoapException throwSoapException = new ThrowSoapException();

   // Make a call to the Web service method, which throws an
   // exception.
    try
    {
       throwSoapException.myThrow();
    }
    catch (SoapException error) 
    {
       // Populate the table with the exception details.
       ErrorTable.Rows.Add(BuildNewRow("Fault Code Namespace",
                                        error.Code.Namespace));
       ErrorTable.Rows.Add(BuildNewRow("Fault Code Name",
                                        error.Code.Name)); 
       ErrorTable.Rows.Add(BuildNewRow(
          "SOAP Actor that threw Exception", error.Actor));
       ErrorTable.Rows.Add(BuildNewRow("Error Message",
           error.Message));
       ErrorTable.Rows.Add(BuildNewRow("Detail",
           HttpUtility.HtmlEncode(error.Detail.OuterXml)));

       return;
     }
 
 }
// This populates a row in an HtmlTable.
 HtmlTableRow BuildNewRow(string Cell1Text, string Cell2Text) {
     HtmlTableRow row = new HtmlTableRow();
     HtmlTableCell cell1 = new HtmlTableCell();
     HtmlTableCell cell2 = new HtmlTableCell();
     
     //Set the contents of the two cells.
     cell1.Controls.Add(new LiteralControl(Cell1Text));
     //Add a cell to the row.
     row.Cells.Add(cell1);
 
     cell2.Controls.Add(new LiteralControl(Cell2Text));
 
     //Add a cell to the row.
     row.Cells.Add(cell2);
     return row;
     
 }
 </script>
 <head>
 <body>
     <table id="ErrorTable" CellPadding=5 CellSpacing=0 Border="1" BorderColor="black"  />
 </body>

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Comment : gérer les exceptions levées par une méthode de service Web

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