Login page for mobile application

[pd123]

I get the following error on page when I click Login button: I've attached Code. Please please help .

ExecuteReader: Connection property has not been initialized.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidO perationExcepti on: ExecuteReader: Connection property has not been initialized.

Source Error:

Line 47: sqlCommand1.Par ameters["@password"].Value=txtPassw ord.Text;
Line 48: sqlConnection1. Open();
Line 49: int nCount = (int)sqlCommand 1.ExecuteScalar ();
Line 50: if (nCount ==1)
Line 51: {

Source File: c:\inetpub\wwwr oot\mobilespeec h\login.aspx.cs Line: 49

Stack Trace:

[InvalidOperatio nException: ExecuteReader: Connection property has not been initialized.]
System.Data.Sql Client.SqlComma nd.ValidateComm and(String method, Boolean executing) +251
System.Data.Sql Client.SqlComma nd.ExecuteReade r(CommandBehavi or cmdBehavior, RunBehavior runBehavior, Boolean returnStream) +80
System.Data.Sql Client.SqlComma nd.ExecuteScala r() +177
MobileSpeech.lo gin1.cmdLogin_C lick(Object sender, EventArgs e) in c:\inetpub\wwwr oot\mobilespeec h\login.aspx.cs :49
System.Web.UI.M obileControls.C ommand.OnClick( EventArgs e) +80
System.Web.UI.M obileControls.C ommand.System.W eb.UI.IPostBack EventHandler.Ra isePostBackEven t(String argument) +82
System.Web.UI.P age.RaisePostBa ckEvent(IPostBa ckEventHandler sourceControl, String eventArgument) +18
System.Web.UI.M obileControls.M obilePage.Raise PostBackEvent(I PostBackEventHa ndler sourceControl, String eventArgument) +78
System.Web.UI.P age.RaisePostBa ckEvent(NameVal ueCollection postData) +33
System.Web.UI.P age.ProcessRequ estMain() +1292