Question

I have a UserControl on my aspx file. On the main page I have a button. When Click on the button, I want to alert the UserControl’s Textbox value. Is it possible?

Answer 1

You need to expose the UserControl’s TextBox from the UserControl. Like this:

public TextBox txtBox
{
    get
    {
        return TextBox1;
    }
    set
    {
        TextBox1 = value;
    }
}

In this way, the TextBox becomes a public property of the UserControl, and it is accessible to any page using it. You can access to it from Javascript in the following way:

function getTextBoxAlert() {
    alert(document.getElementById("<%=MyTextBox1.txtBox.ClientID.ToString() %>").value);
}

Where MyTextBox1 would be the name (ID) of the UserControl, and txtBox the name of the property.

Good luck!