Trim TextBox spaces

I am facing difficulity of having to Trim Spaces in Textbox.I am given a task of needing to trim spaces in the textbox and not to allow space at the front and at the back of the textbox as when u enter a space in front of the textbox it will be a totally different data from the one which has no space. So can anyone help me about the trim in Asp.net 2.0 c# languague.

<trclass="i4">

<tdclass="i5">

<span><span><spanclass="i6">C</span>USTCODE</span><spanclass="i6">

</span>

</span>

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<asp:RequiredFieldValidatorID="RequiredFieldValidator2"runat="server"ControlToValidate="CUSTCODETextBox"

ErrorMessage="*"Font-Bold="False"></asp:RequiredFieldValidator></td>

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<asp:TextBoxID="CUSTCODETextBox"runat="server"Text='<%# Bind("CUSTCODE") %>'MaxLength="20"></asp:TextBox></td>

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When you are saving the data in your code behind, you can trim the text using this code:

string customerCode = CUSTOMCODETextBox.Text.Trim();

That will get you the value entered by the user, without any leading or trailing spaces.