how do I get the ID of my dynamically created controls in C# code behind

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HTML

<script type = "text/javascript">
       var counter = 0;
       function AddFileUpload() {
           counter++;
           var div = document.createElement('DIV');

           div.innerHTML = '<input id="file' +
     counter + '" name = "file' +
     counter + '" type="file" />  Name Of Certificate : <input  id="TextBox' +
     counter + '" name="TextBox' +
     counter + '" type="text" />   Year Obtained : <input  id="TextBox2' +
     counter + '" name="TextBox2' +
     counter + '" type="text" />   <input id="Button' +
     counter + '" type="button" value="Remove"  önclick = "RemoveFileUpload(this)" />';

           document.getElementById("FileUploadContainer").appendChild(div);
       }
       function RemoveFileUpload(div) {
           document.getElementById("FileUploadContainer").removeChild(div.parentNode);
       }
</script>

my C# code

C#

protected void PersonalButtonNext3_Click(object sender, EventArgs e)
    {
        DataSet ds = new DataSet();
        BSEnterpriseLib dal = new BSEnterpriseLib();
        string msg = "";
       

    for (int i = 0; i < Request.Files.Count; i++)
    {
        HttpPostedFile PostedFile = Request.Files[i];
        if (PostedFile.ContentLength > 0)
        {
            string FileName = System.IO.Path.GetFileName(PostedFile.FileName);
            
//here I need to get the ID of the text boxes and get the data inputed into them and then use //this data to input into the database, while iterating     

            //insert into the database here
            PostedFile.SaveAs(Server.MapPath("Uploaded Documents\\") + FileName);
        }
    }

    messagelabel.text = "Successful";
    }

Posted 15-Feb-14 0:45am

ebukaegonu2

Updated 15-Feb-14 1:04am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

v3

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Comments

Ajay_Babu 15-Feb-14 7:25am

you giving textbox id statically using javascript?

ebukaegonu2 18-Feb-14 3:04am

yes i am. and i need to get the id from my code behind, but ive solved the problem, thanks

2 solutions

Solution 1

You can't get the values of these Dynamic Controls as they are getting created at Client Side using JavaScript.
Instead create them from Code Behind.

Or you can define them in aspx page with its visibility false (by setting style="display:none;"). In that JavaScript function, just make them visible.

Posted 15-Feb-14 1:23am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Updated 2-Jul-14 0:08am

v2

Comments

badr slaoui 2-Jul-14 6:00am

if a control is defined with visibilty false , it is not rendered at all to the client side then you cannot call it at all.

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 2-Jul-14 6:08am

By visibility false, I meant to set the display property to none actually. I did not mean to set the Visible="false".

Anyway, I am updating my answer. :)

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ebukaegonu2 · Accepted Answer · 2014-02-17T21:01:00

protected void PersonalButtonNext3_Click(object sender, EventArgs e)
{
DataSet ds = new DataSet();
BSEnterpriseLib dal = new BSEnterpriseLib();
string msg = "";

for (int i = 0; i < Request.Files.Count; i++)
{
HttpPostedFile PostedFile = Request.Files[i];
if (PostedFile.ContentLength > 0)
{
string FileName = System.IO.Path.GetFileName(PostedFile.FileName);
FileName = Session["StaffIDforTabs"].ToString() + "_" + FileName;

var SChoolAttended = Request.Form["TextBox2" + i];
var NameOfCertificate = Request.Form["TextBox" + i];
var YearObtained = Request.Form["TextBox3" + i];

//insert into the database here
dal.InsertApplicationAcademicQualification(FileName, "~/Uploaded Documents/" + FileName, Convert.ToInt32(Session["StaffIDforTabs"]), SChoolAttended, YearObtained, NameOfCertificate, ref msg);

if (msg != "")
{
MessageBox.Show("Unable to Upload Certificates as a result of " + msg);
return;
}

PostedFile.SaveAs(Server.MapPath("Uploaded Documents\\") + FileName);
}
}

ShowError("Successful");
MessageBox.Show("Successful");
WebTab1.SelectedIndex = 2;

}