While (ModelBuilder)

Summary

Works exactly like 'while' in any scripting/programming language, executing "while" a condition is true or false for the input or set of inputs.

Usage

• This tool is intended for use in ModelBuilder and not in Python scripting.

• If an Iterator is added to a model, all tools in the model iterate for each value in the iterator. If you do not want to run each tool in the model for each iterated value, create a sub-model/model within a model/nested model that contains only the iterator and add it as a model tool into the main model.

Legacy:

Replaces iterate until a variable is false from the Iteration Options in Model Properties.

Syntax

While_mb (in_values, {condition})

Parameter	Explanation	Data Type
in_values [in_value,...]	Input values to check whether to iterate or not.	Multiple Value
condition (Optional)	Choose True or False to set the condition. True — Iteration will run until all the input values are True. This is the default. False — Iteration will run until all the input values are False.	String

Environments

This tool does not use any geoprocessing environments

Licensing Information

ArcGIS for Desktop Basic: Yes

ArcGIS for Desktop Standard: Yes

ArcGIS for Desktop Advanced: Yes