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Old April 24th, 2004, 10:30 AM
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Default .getxml problem

I am trying to retreive some data from the SQLDatabase using the following code.

<WebMethod(Description:="This gets certain information about the chemical searching via the Chemical state")> _
       Public Function getChemicalState(ByVal sChemState As String) As String

        Dim connectionString As String = "server='(local)'; user id='username'; password='password'; database='Chemical'"
        Dim dbConnection As System.Data.IDbConnection = New System.Data.SqlClient.SqlConnection(connectionStri ng)

        Dim myCommand As SqlCommand
        myCommand = New SqlCommand("usp_ChemicalState", dbConnection)
        myCommand.CommandType = CommandType.StoredProcedure

        Dim dbParam_chemicalstate As SqlParameter = New SqlParameter("@ChemState", SqlDbType.NVarChar, 6)
        dbParam_chemicalstate.Value = sChemState
        myCommand.Parameters.Add(dbParam_chemicalstate)

        Dim myDataSet As New DataSet("GET_CHEMICAL_INFORMATION")
        Dim myDataAdapter As SqlDataAdapter = New SqlDataAdapter(myCommand)
        myDataAdapter.Fill(myDataSet)
        myDataSet.Tables(0).TableName = "CHEMICAL_INFORMATION"
        myDataSet.Tables(1).TableName = "TREATMENT_INFORMATION"

        Return myDataSet.GetXml

    End Function

When it is run and the search value is entered and you click invoke it then opens a web page and the error HTTP 500 Internal server error. Does anyone know where am going wrong.

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Old May 11th, 2004, 07:15 PM
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Can you place a break point at the beginning of your function and then run it in debug mode? Then you can step through the code and find the exact statement that errors out.

-Manish Jadhav


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