How to access server controls for eg. Textbox values in aspx page?

Question

Can I access server control values in aspx design page. For now being its just my curiosity but may be in need on tomorrow or so. For example I have a label in aspx page and I want to assign a textbox value to it.

I know I can use aspx.cs file instead but any desired suggestion will be highly appreciable.

Thanks in advance...... :)

Use Java Script for client side calculations

Ishan
– Ishan

2012-04-27 08:23:30 +00:00
Commented Apr 27, 2012 at 8:23 — Ishan
– Ishan, Commented Apr 27, 2012 at 8:23

Kamran Pervaiz · Accepted Answer · 2012-04-27 08:26:26Z

3

There are many ways.

1) var txtbox = Document.getElementbyId("<%= texboxId.ClientID%>"); txtbox.value = "new";

2) var txtbox = $("#" + "<%= texboxId.ClientID%>"); txtbox.value = "new";

3) var txtbox = $get("texboxId"); txtbox.value = "new";

If you are using Asp.Net 4.0 then the easy way is

<asp:TextBox runat="server" ID="txtboxId" ClientIDMode="Static" />

and access it directly without using ClientID.

1) var txtbox = Document.getElementbyId("txtboxId"); txtbox.value = "new";

2) var txtbox = $("#txtboxId"); txtbox.value = "new";

For number 2 you need Jquery and for number 3 you need Microsoft AJAX library.

answered Apr 27, 2012 at 8:26

Kamran Pervaiz

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13 Comments

Ajendra Prasad Over a year ago

Thanks @Kamran Pervaiz don't know about software development but you have signs of a good teacher........ take care :)

Ajendra Prasad Over a year ago

<asp:TextBox ID="TextBox1" Text="Ajendra" runat="server"> </asp:TextBox> <asp:Label ID="Label2" runat="server" Text="<%#this.TextBox1.Text;%>"></asp:Label> Am I doing right ? getting error ")" missing. javascript is doing fine :)

Kamran Pervaiz Over a year ago

what do you want to achieve? your code will just make the label text as textbox text. which you can do it in codebehind. Label2.Text = TextBox1.Text;

Ajendra Prasad Over a year ago

I want to assign the text of TextBox1 to Label2's text property using the same technique in a right way. I mean like I can concatenate the entered text to the text property of a link button to move to te new page with that entered parameter.

Ajendra Prasad Over a year ago

I know using code behind its very easy but I think how it will be done if I want to do it in design pade

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