While—Help | ArcGIS Desktop

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.

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.

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

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

Name	Explanation	Data Type
continue		Boolean

This tool does not use any geoprocessing environments.