I am busy with an e-commerce web application using visual studio 2005 and IIS 7
I got this error
System.TypeInitializationException was unhandled by user
code
Message="The
type initializer for 'ShopConfiguration' threw an exception."
Source="App_Code.r-ihwy-d"
TypeName="ShopConfiguration"
StackTrace:
at
ShopConfiguration.get_DbProviderName()
at
GenericDataAccess.CreateCommand() in c:\inetpub\wwwroot\Beadafrican\App_Code\GenericDataAccess.cs:line
63
at
CatalogAccess.GetDepartments() in
c:\inetpub\wwwroot\Beadafrican\App_Code\CatalogAccess.cs:line 28
at
UserControls_DepartmentsList.Page_Load(Object sender, EventArgs e) in
c:\inetpub\wwwroot\Beadafrican\UserControls\DepartmentsList.ascx.cs:line 22
at
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object
t, EventArgs e)
at
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender,
EventArgs e)
at
System.Web.UI.Control.OnLoad(EventArgs e)
at
System.Web.UI.Control.LoadRecursive()
at
System.Web.UI.Control.LoadRecursive()
at
System.Web.UI.Control.LoadRecursive()
at
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint,
Boolean includeStagesAfterAsyncPoint)
If I look at the code it refers to I dont see what is wrong? Here is the code if anyone can please assist it would be great!
GenericDataAccess.cs:
public static class GenericDataAccess
{
//static constructor
static GenericDataAccess()
{
//
// TODO: Add constructor logic here
//
}
//execute a command and returns the result as a DataTable Object
public static DataTable ExecuteSelectCommand(DbCommand command)
{
//The DataTable to be returned
DataTable table;
//Execute the command making sure the connection gets closed in the end
try
{
//open the data connection
command.Connection.Open();
//Execute the command and save the results in a DataTable
DbDataReader reader = command.ExecuteReader();
table = new DataTable();
table.Load(reader);
//Close the reader
reader.Close();
}
catch (Exception ex)
{
Utilities.LogError(ex);
throw ex;
}
finally
{
//Close the connection
command.Connection.Close();
}
return table;
}
//creates and prepares a new DbCommand object on a new connection
public static DbCommand CreateCommand()
{
//Obtain the database provider name
string dataProviderName = ShopConfiguration.DbProviderName;
//Obtain the database connection string
string connectionString = ShopConfiguration.DbConnectionString;
//Create a new data provider factory
DbProviderFactory factory = DbProviderFactories.GetFactory(dataProviderName);
//Obtain a database specific connection object
DbConnection conn = factory.CreateConnection();
//Set the connection string
conn.ConnectionString = connectionString;
//Create a database specific command object
DbCommand comm = conn.CreateCommand();
//Set the command type to stored procedure
comm.CommandType = CommandType.StoredProcedure;
//Return the initialised command object
return comm;
}
CatalogAccess.cs
public static class CatalogAccess
{
static CatalogAccess()
{
//
// TODO: Add constructor logic here
//
}
//Retrieve the list of departments
public static DataTable GetDepartments()
{
//get configured DbCommand object
DbCommand comm = GenericDataAccess.CreateCommand();
//set the stored procedure name
comm.CommandText = "GetDepartments";
//execute the stored procedure and return the results
return GenericDataAccess.ExecuteSelectCommand(comm);
}
}
DepartementList.ascx.cs
public partial class UserControls_DepartmentsList : System.Web.UI.UserControl
{
// Load department details into the DataList
protected void Page_Load(object sender, EventArgs e)
{
// don't reload data during postbacks
{
// CatalogAccess.GetDepartments returns a DataTable object containing
// department data, which is read in the ItemTemplate of the DataList
list.DataSource = CatalogAccess.GetDepartments();
// Needed to bind the data bound controls to the data source
list.DataBind();
}
}
}