Logs a warning during a build based on an evaluated conditional statement.
The following table describes the parameters of the
The warning code to associate with the warning.
Specifies the relevant file, if any. If no file is provided, the file containing the Warning task is used.
The Help keyword to associate with the warning.
The warning text that MSBuild logs if the
Warning task allows MSBuild projects to check for the presence of a required configuration or property before proceeding with the next build step.
Condition parameter of the
Warning task evaluates to
true, the value of the
Text parameter is logged and the build continues to execute. If a
Condition parameter does not exist, the warning text is logged. For more information on logging, see Obtain build logs.
In addition to the parameters listed above, this task inherits parameters from the TaskExtension class, which itself inherits from the Task class. For a list of these additional parameters and their descriptions, see TaskExtension base class.
The following code example checks for properties that are set on the command line. If there are no properties set, the project raises a warning event, and logs the value of the
Text parameter of the
<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> <Target Name="ValidateCommandLine"> <Warning Text=" The 0 property was not set on the command line." Condition="'$(0)' == ''" /> <Warning Text=" The FREEBUILD property was not set on the command line." Condition="'$(FREEBUILD)' == ''" /> </Target> ... </Project>