How to return a change to a dynamic textbox

Question

I have two dynamically created text boxes, I'll call "txt1000" and "txt2000".
Here's what I can do so far:

1. Type in a code in txt1000.
2. Press <enter> and get to the method for event TextChanged.
3. Use the code to get a description of the code.

How can I now do the following:

1. Send the description to txt2000.

Can that be done? I can use FindControl to focus on "txt2000", but I have no idea how to fill the text property of it!

Answer 1

Hi @Coreysan ,
If you directly find the id is "txt2000",you could pass the value from txt1000 to txt2000.Just like this:

 protected void Page_Load(object sender, EventArgs e)  
        {  
            for (int i = 1; i <=2; i++)  
            {  
                AddControls(i);  
            }  
        }  
        private void AddControls(int controlNumber)  
        {  
            var newPanel = new Panel();  
            var newLabel = new Label();  
            var newTextbox = new TextBox();  
  
            // textbox needs a unique id to maintain state information  
            newTextbox.ID = "TextBox_" + controlNumber;  
  
            newLabel.Text = "txt"+controlNumber+"000: ";  
  
            // add the label and textbox to the panel, then add the panel to the form  
            newPanel.Controls.Add(newLabel);  
            newPanel.Controls.Add(newTextbox);  
            newTextbox.AutoPostBack = true;  
            newTextbox.TextChanged += new System.EventHandler(this.txtBox_TextChanged);  
            form1.Controls.Add(newPanel);  
        }  
        private void txtBox_TextChanged(object sender, EventArgs e)  
        {  
            var x= (sender as TextBox).Text;  
            TextBox txt2 = (TextBox)form1.FindControl("TextBox_2");  
            txt2.Text = x;  
        }  

Best regards,
Yijing Sun

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