Home > AJAX, ASP.Net > How to Check UserName Availability using ASP.Net

How to Check UserName Availability using ASP.Net

Hi all,

in previous posts i provide many examples how to check username Availability

Check UserName Availability with JQuery using Memebership

JQuery to Check User Name Availability from Database

Check UserName Availability with AJAX

Check UserName Availablity

Check UserName Availability with Membership

Check UserName Availability

and now i’m going to provide another way to check username Availability using AJAX with Membership

<asp:ScriptManager ID="sm" runat="server" />
<asp:UpdatePanel runat="server" ID="up1">
    Username: <asp:TextBox runat="server" id="Username"
    AutoPostBack="true" OnTextChanged="Username_Changed" />
    <div runat="server" id="UserAvailability"></div><br />

and in code behind :-

protected void Username_Changed(object sender, EventArgs e)
  if (Membership.GetUser(Username.Text) != null)
    UserAvailability.InnerText = "Username taken, sorry.";
    UserAvailability.Attributes.Add("class", "taken");
    UserAvailability.InnerText = "Username available!";
    UserAvailability.Attributes.Add("class", "available");

and the css

  font-family: Verdana, Sans-Serif;
  font-size: 10pt;

label, input
  height: 14px;
  margin-bottom: 5px;

  float: left;
  text-align: right;
  margin-right: 20px;
  width: 75px;

  float: left;

  clear: both;

  padding-left: 22px;
  margin-left: 5px;
  float: left;
  background-position: left;
  background-repeat: no-repeat;

Hope this helps

Good Luck

Categories: AJAX, ASP.Net
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