Accessing Client Side Dynamic Controls Within Asp.net Codebehind

Hi I'm trying to access the html controls that are created dynamically within an event but I'm unable to access this. I'm using the following code to create the elements on the cl

Solution 1:

Well your adding client-side HTML controls via JavaScript - ASP.NET will not see those (they're not runat=server, this needs to be render-time, not after the page has loaded).

What you can do is add "name" attributes to all your elements (which you've done), then when you submit the form (with the Button click), you can check the form elements via the Request.Form collection.

protectedvoidButton1_Click(object sender, EventArgs e)
{
   var inputValue = Request.Form["someId"];
}

You might also need to set AutoPostBack="true" on the button, so it submits the form when you click the button.

HTH

Solution 2:

The reason why dynamic input controls only show up when there is at-least 1 static is because the form needs the enctype="multipart/form-data" to upload files and asp.net adds that when you have 1 static file control. To have no static file input controls, you can set the enctype="multipart/form-data" attribute for the form manually in the aspx markup or in code-behind: Page.Form.Attributes.Add("enctype", "multipart/form-data");

Solution 3:

I would make sure that the input fields are added to an existing form element in the DOM. Also, I've had problems in the past with adding dynamic input (file) controls to a form, and .NET cannot see them... Unless there is at least one statically defined file input in the form already.