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public void ClearAllChildFormText()
{
// Obtain a reference to the currently active MDI child form.
Form tempChild = this.ActiveMdiChild;
// Loop through all controls on the child form.
for (int i = 0; i < tempChild.Controls.Count; i++)
{
// Determine if the current control on the child form is a TextBox.
if (tempChild.Controls[i] is TextBox)
{
// Clear the contents of the control since it is a TextBox.
tempChild.Controls[i].Text = "";
}
}
}