asked on

clear textbox in clientside

in ASP.NET 2.0 I have a page with a formview and in it a textbox and a button.
I want that push on the button will clear the textbox in clientside in javascript.

If I didn't have the formview I could do something like:
<asp:TextBox ID="TBCV" runat="server" Text='<%# Bind("CV") %>'></asp:TextBox>

<asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="this.form.TBCV.value=''" />
but as the texbox TBCV is a part of a formview control so "this.form.TBCV.value" is wrong.
How do I have to write it?

If I do it in server side I use the findcontrol but I don't want to use it because I want it to be quicker.

How do I do it?
ThankYou
Anat

Sammy

Thats easy
add this script to the head of your aspx page
<script type="text/javascript">
function ClearIT(txtID)

</script>
and in your code behind page load add this
Me.Button2.Attributes.Add("onClick", "javascript:ClearIT(TBCV')")

HTH

ANAT2403

ASKER

Hi,
You did not react to the fact that I am having a formview. In formview you can not turn to the control directly
but through the formview.
To what you wrote in the code behind I know how to change and it should be:
Button tempTB = (Button)FormView1.FindControl("TBCV'");
and then
tempTB.Attributes.Add("onclick","javascript:ClearIT('CV_containerTB')");
but to the javascript function - this is my problem how to write.
By the way if I do what you said I get the error:
A Runtime Error
Error: 'document.getElementById(....) is null or not an object.

ANAT2403

ASKER

Sorry but my comment was sent before I finished writing:
Ignore it.
Again

Hi,
You did not react to the fact that I am having a formview. In formview you can not turn to the control directly
but through the formview.
To what you wrote in the code behind I know how to change and it should be:
Button tempTB = (Button)FormView1.FindControl("Button2");
and then
tempTB.Attributes.Add("onclick","javascript:ClearIT('TBCV');

but to the javascript function - this is my problem how to write.
By the way if I do what you said I get the error:
A Runtime Error
Error: 'document.getElementById(....) is null or not an object.

ThankYou
Anat

Sammy

Try this
Me.Button2.Attributes.Add("onClick", "javascript:ClearIT('" & Me.Txt1.ClientID & "')")

Sammy

ignore the last post, I dont think it will work

ASKER CERTIFIED SOLUTION

Sammy

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ANAT2403

ASKER

Just Perfect !!!!
ThankYou
I add here the code in C# if anybody needs it.

TextBox TBCV = (TextBox)FVSelfEntry.FindControl("CV_containerTB");
Button btnClear = (Button)FVSelfEntry.FindControl("BtnClearCV");
btnClear.Attributes.Add("onclick", "javascript:ClearIT('" + TBCV.ClientID + "')");

Sammy

I am glad its working for you.
Dont forget to answer this question please so others can use it

Good Luck

ANAT2403

ASKER

terribly sorry. I accepted the answer before but somehow it didn't catch.
Anat.

Sammy

Thats Ok Anat :-)

ANAT2403

ASKER

Hi sammy
It is working for me the clear textbox but again it refreshes the screen and I don't know why?
Can you help?
Anat