How Can I Efficiently Iterate Through and Assign Values to Multiple Sequentially Named Textboxes in a Windows Forms Application?

Iterating Through Multiple Textboxes

Within a Windows forms application, you've encountered the challenge of looping through 37 textboxes with sequential names, each named "DateTextBox" followed by a numeric suffix. Your task involves assigning a value based on the loop counter 'i' to these textboxes.

Recursive Control Retrieval

To effectively address this, leverage an extension method that can recursively retrieve all controls and sub-controls of a specific type. Here's the code for it:

public static IEnumerable<TControl> GetChildControls<TControl>(this Control control) where TControl : Control
{
    var children = (control.Controls != null) ? control.Controls.OfType<TControl>() : Enumerable.Empty<TControl>();
    return children.SelectMany(c => GetChildControls<TControl>(c)).Concat(children);
}

Implementation

To utilize this method, you can retrieve all the textboxes present within your form:

var allTextBoxes = this.GetChildControls<TextBox>();

Once the list of textboxes has been obtained, you can loop through each one and assign the appropriate value based on the 'i' counter:

foreach (TextBox tb in allTextBoxes)
{
    tb.Text = ...;
}

By implementing this approach, you can efficiently iterate through the numerous textboxes and assign values dynamically, even if they are placed within nested panels.

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