What type of value does a text control in a form require?

A text control in a form is specifically designed to accept string values, which consist of a sequence of characters. This allows users to input any form of textual data, such as words, sentences, or even alphanumeric characters. The flexibility of string values supports a wide range of applications, from collecting names and descriptions to entering commands or queries.

Given the context of forms and user inputs, string values are crucial for capturing the information that users need to provide in a more descriptive and nuanced manner compared to numeric or boolean values. Numeric values are limited to numbers, while boolean values only indicate true or false, restricting the potential input. Image files are outside the scope of what a text control can handle, as they are intended for visual content rather than textual data. Thus, string values are the appropriate and necessary type of input for a text control in a form.