Using Change Password ASP.NET control in SharePoint 2010 FBA.

Create a new SharePoint 2010 Empty Project in visual studio 2010.

Right click the project à Add New Itemà Select “Application Page”.

Add the ChangePassword control inside PlaceHolderMain content place holder

<asp:Content ID=”Main” ContentPlaceHolderID=”PlaceHolderMain” runat=”server”>

<asp:ChangePassword
id=”myChangePassword” newpasswordregularexpressionerrormessage=”Error: Your password must be at least 5 characters long, and contain at least one number and one special character.” runat=”server” CancelDestinationPageUrl=”~/pages/default.aspx” OnContinueButtonClick=”ContinueClickHandler” MembershipProvider=”SqlMembers”  OnChangingPassword=”ChangingPassword” OnChangedPassword=”ChangedPassword”></asp:ChangePassword></asp:Content>

Put the following code for OnChangingPassword and OnChangedPassword Event handler in the code behind. 

 // the username would be in the following format
 // 0#.f|sqlmembers|nishantr
 // so we need to get only the username part
 // otherwise it wont work properly
protected void ChangingPassword(object sender, EventArgs e)
{
System.Web.UI.WebControls.ChangePassword chngPassword = (System.Web.UI.WebControls.ChangePassword)sender;
chngPassword.UserName = chngPassword.UserName.Substring(chngPassword.UserName.LastIndexOf("|") + 1);
}

// add reference to Microsoft.SharePoint.IdentityModel dll
protected void ChangedPassword(object sender, EventArgs e)
{
System.Web.UI.WebControls.ChangePassword chngPassword = (System.Web.UI.WebControls.ChangePassword)sender;
FormsAuthentication.SignOut();
Microsoft.SharePoint.IdentityModel.SPClaimsUtility.AuthenticateFormsUser(new Uri(SPContext.Current.Web.Url), chngPassword.UserName, chngPassword.NewPassword);
}

Check this really helpful pack

http://sharepoint2010fba.codeplex.com/

Hope it helps.

Add reference to Microsoft.SharePoint.IdentityModel.dll

Had trouble finding the above assembly to add reference to it. It wasn’t there in the 14 hive. The location where we can find it is

C:\Windows\assembly\GAC_MSIL\Microsoft.SharePoint.IdentityModel\

Bye.