internal void ValidateAsyncResult(IAsyncResult ar, string endMethod)
{
if (ar == null)
{
throw new ArgumentException("result passed is null!");
}
if (!(ar is SqlAsyncResult))
{
throw new ArgumentException(String.Format("cannot test validity of types {0}",
ar.GetType()));
}
SqlAsyncResult result = (SqlAsyncResult)ar;
if (result.EndMethod != endMethod)
{
throw new InvalidOperationException(String.Format("Mismatched {0} called for AsyncResult. " +
"Expected call to {1} but {0} is called instead.",
endMethod, result.EndMethod));
}
if (result.Ended)
{
throw new InvalidOperationException(String.Format("The method {0} cannot be called " +
"more than once for the same AsyncResult.", endMethod));
}
}
internal void EndExecuteInternal(IAsyncResult ar)
{
SqlAsyncResult sqlResult = ((SqlAsyncResult)ar);
Connection.Tds.WaitFor(sqlResult.InternalResult);
Connection.Tds.CheckAndThrowException(sqlResult.InternalResult);
}
public IAsyncResult BeginExecuteNonQuery(AsyncCallback callback, object stateObject)
{
ValidateCommand("BeginExecuteNonQuery", true);
SqlAsyncResult ar = new SqlAsyncResult(callback, stateObject);
ar.EndMethod = "EndExecuteNonQuery";
ar.InternalResult = BeginExecuteInternal(CommandBehavior.Default, false, ar.BubbleCallback, ar);
return(ar);
}
public IAsyncResult BeginExecuteXmlReader(AsyncCallback callback, object stateObject)
{
ValidateCommand("BeginExecuteXmlReader", true);
SqlAsyncResult ar = new SqlAsyncResult(callback, stateObject);
ar.EndMethod = "EndExecuteXmlReader";
ar.InternalResult = BeginExecuteInternal(behavior, true,
ar.BubbleCallback, stateObject);
return(ar);
}
public IAsyncResult BeginExecuteReader(AsyncCallback callback, object state, CommandBehavior behavior)
{
ValidateCommand("BeginExecuteReader");
this.behavior = behavior;
SqlAsyncResult ar = new SqlAsyncResult(callback, state);
ar.EndMethod = "EndExecuteReader";
IAsyncResult tdsResult = BeginExecuteInternal(behavior, true,
ar.BubbleCallback, state);
ar.InternalResult = tdsResult;
return(ar);
}
public IAsyncResult BeginExecuteXmlReader (AsyncCallback callback, object stateObject)
{
ValidateCommand ("BeginExecuteXmlReader", true);
SqlAsyncResult ar = new SqlAsyncResult (callback, stateObject);
ar.EndMethod = "EndExecuteXmlReader";
ar.InternalResult = BeginExecuteInternal (behavior, true,
ar.BubbleCallback, stateObject);
return ar;
}
public IAsyncResult BeginExecuteReader (AsyncCallback callback, object stateObject, CommandBehavior behavior)
{
ValidateCommand ("BeginExecuteReader", true);
this.behavior = behavior;
SqlAsyncResult ar = new SqlAsyncResult (callback, stateObject);
ar.EndMethod = "EndExecuteReader";
IAsyncResult tdsResult = BeginExecuteInternal (behavior, true,
ar.BubbleCallback, stateObject);
ar.InternalResult = tdsResult;
return ar;
}
public IAsyncResult BeginExecuteNonQuery (AsyncCallback callback, object stateObject)
{
ValidateCommand ("BeginExecuteNonQuery", true);
SqlAsyncResult ar = new SqlAsyncResult (callback, stateObject);
ar.EndMethod = "EndExecuteNonQuery";
ar.InternalResult = BeginExecuteInternal (CommandBehavior.Default, false, ar.BubbleCallback, ar);
return ar;
}
