Hi Jeren,
Thank you for your patience.
A TextBox inside the Toolbar template can be accessed by using the Sender object of the Template Textbox's onLoad event and casting it as a TextBox. Then the TextBox's instace can be accessed to manipulate the templated textbox. Kindly find the code snippet below to achieve this.
[ASPX]
[C#]
TextBox myTextBox = new TextBox();
public void txtBox_Load(object sender, EventArgs e)
{
myTextBox = sender as TextBox;
}
protected void Button1_Click(object sender, EventArgs e)
{
myTextBox.Text = "Template TextBox Found!";
}
Kindly try the above and please let us know if this works for you.
Regards,
Lakxman Kumar C