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Captcha – VB.NET

Email form <tr> <td></td> <td></td> </tr> <tr> <td></td> <td><img style=”WIDTH: 119px; HEIGHT: 34px” alt=”” src=”Captcha.aspx” />  <a href=””>Can’t Read?</a></td> </tr> <tr> <td></td> <td><asp:textbox runat=”server” ID=”txtcaptcha”></asp:textbox></td> </tr> <tr> <td></td> <asp:ImageButton ID=”ContactSeller” CausesValidation=”True” runat=”server” ImageURL=”/images/buttons/btn_submit.gif” /></td> </tr> Email page code behind …. Dim captchaStr As String = Session(“randomStr”) Dim captchaTxt As TextBox = ContactSeller.FindControl(“txtcaptcha”) If captchaStr captchaTxt.Text.ToString […]