How to Pass Text Data Between Two Forms in C#?

Efficient Data Transfer Between C# Forms

Data exchange between forms is a frequent programming hurdle. This article addresses a developer's challenge in transferring text data between two C# forms.

The scenario involves Form1 (containing UI elements such as a listbox) and Form2 (with a textbox). The objective was to move the textbox text from Form2 to Form1's listbox.

A direct approach of making the listbox public in Form1 and directly adding text from Form2 failed.

A more robust solution involves modifying Form1's constructor to accept a parameter. This parameter receives the text data from Form2's textbox. The text is then added to the listbox during Form1's initialization.

<code class="language-csharp">public Form1(string customItem)
{
  InitializeComponent();
  this.myListBox.Items.Add(customItem);
}</code>

When creating an instance of Form1, the text is passed as an argument:

<code class="language-csharp">Form1 frm = new Form1(this.textBox.Text);</code>

This method ensures reliable data transfer between forms, providing a clean and effective solution.

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