GetLastError method (DataWindows)

Description

Returns the error
code of the last database error that occurred in the Web DataWindow
server component.

Controls

DataWindow type	Method applies to
Web	Server component

Syntax

[Web DataWindow server component]

long <span>dwcontrol</span><span>.</span><span>GetLastError</span> ( )

1	long <span>dwcontrol</span><span>.</span><span>GetLastError</span> ( )

Argument	Description
dwcontrol	A reference to the DataWindow server component

Return Values

Returns a numeric error code for the last database error that
occurred.

If dwcontrol is null, the method returns
null.

Usage

Call GetLastError and GetLastErrorString to
get information about database errors that caused SetAction, Update, Retrieve,
and RetrieveEx to return –1.

Examples

This code in a page server script calls Retrieve for
the Web DataWindow server component called dwComponent and gets
information about the database error if Retrieve fails:

retVal = dwComponent.Retrieve( );

1	retVal = dwComponent.Retrieve( );

if (retVal &lt; 0) {

1	if (retVal < 0) {

        Response.Write("Retrieval error: "

1	Response.Write("Retrieval error: "

            + dwComponent.<span>GetLastError</span>( )

1	+ dwComponent.<span>GetLastError</span>( )

            + "&lt;BR&gt;"

+ "<BR>"

            + dwComponent.GetLastErrorString( )

1	+ dwComponent.GetLastErrorString( )

            + "&lt;BR&gt;");

1	+ "<BR>");

}

}

August 20, 2023

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GetLastError – PB Docs 150