Hi,

Please could anyone help me with this problem

I have a windows application which is being written in VB.NET and through this application I making a reference to one of my web service. The web service returns a dataset object. When I make the call it causes an error: The error is as follows:

An unhandled exception of type 'System.Web.Services.Protocols.SoapException' occurred in system.web.services.dll

Additional information: Server was unable to process request. --> Message: Cast from string "" to type 'Boolean' is not valid.
Source: Microsoft.VisualBasic
Method: FromString
Stack Trace: at Microsoft.VisualBasic.CompilerServices.BooleanType .FromString(String Value)
at Microsoft.VisualBasic.CompilerServices.BooleanType .FromObject(Object Value)
at Sql.Connection..ctor() in C:\Documents and Settings\Administrator\My Documents\Projects\Repair Management System\Sql\Connection.vb:line 215

I tried looking for the source of the problem and it seems that it is being caused by the function which is auto generated by the .NET

 '<remarks/>
        <System.Web.Services.Protocols.SoapDocumentMethodA ttribute("http://RMS/Web Service/Vendors/GetFullData", RequestNamespace:="http://RMS/Web Service/Vendors", ResponseNamespace:="http://RMS/Web Service/Vendors", Use:=System.Web.Services.Description.SoapBindingUs e.Literal, ParameterStyle:=System.Web.Services.Protocols.Soap ParameterStyle.Wrapped)> _
        Public Function GetFullData() As System.Data.DataSet
            Dim results() As Object = Me.Invoke("GetFullData", New Object(-1) {})
            Return CType(results(0),System.Data.DataSet)
        End Function

can you post the web service method. So that the problem can be identify.


DSBisht

Dinesh Singh Bisht,

Tahnk you for your message, The problem was solved, it was a connection issue with my data layer where my web service was passing an empty connectio nstring... I fixed it by adding the a custome connection elements in my web.config file...