Why GetUser getting NullReferenceException???

[Cirene]

I'm creating my own create user wizard.

Here's my code...
If Membership.GetUser(txtEzUsername.Text).ProviderUse rKey.ToString
<"" Then
Me.lblStatus.Text = "Username is in use. Please select another
Username."
Exit Sub
End If

Here's the error:
System.NullReferenceException was unhandled by user code
Message="Object reference not set to an instance of an object."
Source="App_Web_5nh_bhxb"
StackTrace:
at NewUserWizard.cmdCreate_Click(Object sender, EventArgs e) in
F:\work-related\websites\Lexitel\NewUserWizard.aspx.vb:lin e 87 at
System.Web.UI.WebControls.Button.OnClick(EventArgs e) at
System.Web.UI.WebControls.Button.RaisePostBackEven t(String eventArgument)
at
System.Web.UI.WebControls.Button.System.Web.UI.IPo stBackEventHandler.RaisePostBackEvent(String
eventArgument) at
System.Web.UI.Page.RaisePostBackEvent(IPostBackEve ntHandler sourceControl,
String eventArgument) at
System.Web.UI.Page.RaisePostBackEvent(NameValueCol lection postData) at
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint,
Boolean includeStagesAfterAsyncPoint)
InnerException:

How can I check if GetUser returns nothing (ie the user doesnt exist)?

Thanks.

[Cowboy \(Gregory A. Beamer\)]

You are blowing up on this part:

..ProviderUserKey.ToString

You can avoid this by doing this:

Dim user As MembershipUser = Membership.GetUser(txtEzUsername.Text)

If user is nothing then
'There is no user
Else
'Do what you want
End if

--
Gregory A. Beamer
MVP, MCP: +I, SE, SD, DBA

Subscribe to my blog
http://gregorybeamer.spaces.live.com/lists/feed.rss

or just read it:
http://gregorybeamer.spaces.live.com/

********************************************
| Think outside the box! |
********************************************
"Cirene" <ci****@nowhere.comwrote in message
news:Od**************@TK2MSFTNGP02.phx.gbl...

I'm creating my own create user wizard.

Here's my code...
If Membership.GetUser(txtEzUsername.Text).ProviderUse rKey.ToString
<"" Then
Me.lblStatus.Text = "Username is in use. Please select another
Username."
Exit Sub
End If

Here's the error:
System.NullReferenceException was unhandled by user code
Message="Object reference not set to an instance of an object."
Source="App_Web_5nh_bhxb"
StackTrace:
at NewUserWizard.cmdCreate_Click(Object sender, EventArgs e) in
F:\work-related\websites\Lexitel\NewUserWizard.aspx.vb:lin e 87 at
System.Web.UI.WebControls.Button.OnClick(EventArgs e) at
System.Web.UI.WebControls.Button.RaisePostBackEven t(String eventArgument)
at
System.Web.UI.WebControls.Button.System.Web.UI.IPo stBackEventHandler.RaisePostBackEvent(String
eventArgument) at
System.Web.UI.Page.RaisePostBackEvent(IPostBackEve ntHandler sourceControl,
String eventArgument) at
System.Web.UI.Page.RaisePostBackEvent(NameValueCol lection postData) at
System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
InnerException:

How can I check if GetUser returns nothing (ie the user doesnt exist)?

Thanks.

[Lloyd Sheen]

Cirene wrote:

I'm creating my own create user wizard.

Here's my code...
If Membership.GetUser(txtEzUsername.Text).ProviderUse rKey.ToString
<"" Then
Me.lblStatus.Text = "Username is in use. Please select another
Username."
Exit Sub
End If

Here's the error:
System.NullReferenceException was unhandled by user code
Message="Object reference not set to an instance of an object."
Source="App_Web_5nh_bhxb"
StackTrace:
at NewUserWizard.cmdCreate_Click(Object sender, EventArgs e) in
F:\work-related\websites\Lexitel\NewUserWizard.aspx.vb:lin e 87 at
System.Web.UI.WebControls.Button.OnClick(EventArgs e) at
System.Web.UI.WebControls.Button.RaisePostBackEven t(String eventArgument)
at
System.Web.UI.WebControls.Button.System.Web.UI.IPo stBackEventHandler.RaisePostBackEvent(String
eventArgument) at
System.Web.UI.Page.RaisePostBackEvent(IPostBackEve ntHandler sourceControl,
String eventArgument) at
System.Web.UI.Page.RaisePostBackEvent(NameValueCol lection postData) at
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint,
Boolean includeStagesAfterAsyncPoint)
InnerException:

How can I check if GetUser returns nothing (ie the user doesnt exist)?

Thanks.

The statement
If Membership.GetUser(txtEzUsername.Text).ProviderUse rKey.ToString

expects that a user will be found. The .ProviderUserKey.ToString
expects a user object so you will have to test the
Membership.GetUser(txtEzUsername.Text) for nothing before you attempt to
use the object.

I would suggest a two step statement, the first to attempt to populate a
user object and if it is not nothing then do the .ProviderUserKey etc.

LS

[Cirene]

Thanks Cowboy and Lloyd (and everyone else)!

"Cowboy (Gregory A. Beamer)" <No************@comcast.netNoSpamMwrote in
message news:ua**************@TK2MSFTNGP02.phx.gbl...

You are blowing up on this part:

.ProviderUserKey.ToString

You can avoid this by doing this:

Dim user As MembershipUser = Membership.GetUser(txtEzUsername.Text)

If user is nothing then
'There is no user
Else
'Do what you want
End if

--
Gregory A. Beamer
MVP, MCP: +I, SE, SD, DBA

Subscribe to my blog
http://gregorybeamer.spaces.live.com/lists/feed.rss

or just read it:
http://gregorybeamer.spaces.live.com/

********************************************
| Think outside the box! |
********************************************
"Cirene" <ci****@nowhere.comwrote in message
news:Od**************@TK2MSFTNGP02.phx.gbl...

>I'm creating my own create user wizard.

Here's my code...
If Membership.GetUser(txtEzUsername.Text).ProviderUse rKey.ToString
<"" Then
Me.lblStatus.Text = "Username is in use. Please select another
Username."
Exit Sub
End If

Here's the error:
System.NullReferenceException was unhandled by user code
Message="Object reference not set to an instance of an object."
Source="App_Web_5nh_bhxb"
StackTrace:
at NewUserWizard.cmdCreate_Click(Object sender, EventArgs e) in
F:\work-related\websites\Lexitel\NewUserWizard.aspx.vb:lin e 87 at
System.Web.UI.WebControls.Button.OnClick(EventArg s e) at
System.Web.UI.WebControls.Button.RaisePostBackEve nt(String eventArgument)
at
System.Web.UI.WebControls.Button.System.Web.UI.IP ostBackEventHandler.RaisePostBackEvent(String
eventArgument) at
System.Web.UI.Page.RaisePostBackEvent(IPostBackEv entHandler
sourceControl, String eventArgument) at
System.Web.UI.Page.RaisePostBackEvent(NameValueCo llection postData) at
System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
InnerException:

How can I check if GetUser returns nothing (ie the user doesnt exist)?

Thanks.