BeginExecuteReader(AsyncCallback, object) method

Public Function BeginExecuteReader(
     ByVal callback As AsyncCallback,
    ByVal stateObject As Object
) As IAsyncResult

public IAsyncResult BeginExecuteReader(
     AsyncCallback callback,
    object stateObject
)

callback An System.AsyncCallback delegate that is invoked when the command's execution has completed. Pass null (Nothing in Microsoft Visual Basic) to indicate that no callback is required.
stateObject A user-defined state object that is passed to the callback procedure. Retrieve this object from within the callback procedure using the System.IAsyncResult.AsyncState property.

A System.IAsyncResult that can be used to poll, wait for results, or both is returned; this value is also needed when invoking the EndExecuteReader(IAsyncResult) method, which returns a ULDataReader object that can be used to retrieve the returned rows.

ULException class Any error that occurred while executing the command text.

BeginExecuteReader(AsyncCallback, object) method

Visual Basic syntax

C# syntax

Parameters

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Exceptions

See also