Invalid object name when inputting data from .aspx into sql server

Question

This is my error

Invalid object name 'userdatabase'

This is the code for the source error

enter code here
Line 27: 
Line 28:             User.Open();
Line 29:             xp.ExecuteNonQuery();
Line 30:             User.Close();
Line 31: 

this is the stack trace

[SqlException (0x80131904): Invalid object name 'userdatabase'.]

System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean       breakConnection, Action`1 wrapCloseInAction) +1789270

System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +5340622

System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +244

System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) +1691

System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) +275

System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds) +1421

System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite) +177

System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite) +208

System.Data.SqlClient.SqlCommand.ExecuteNonQuery() +163
   Default2.Button1_Click(Object sender, EventArgs e) in c:\Users\Calum Barnett\Documents\Visual Studio 2013\WebSites\WebSite3\Default2.aspx.cs:29

System.Web.UI.WebControls.Button.OnClick(EventArgs e) +9614758

System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +103
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10

System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13

System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +35

System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1724
`

And this is the cs code:

using System;    
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;


public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Page.IsPostBack == true)
        {
            Label1.Text = ("**Registration Succesful");
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        SqlConnection User = new SqlConnection("Data Source=TOSHIBA0007\\TESTSERVER;Integrated Security=True");
        {
            SqlCommand xp = new SqlCommand("Insert into userdatabase(Username, Email,  Password)Values(@Username, @Email, @Password)", User);
            xp.Parameters.AddWithValue("@Username", InputUsername.Text);
            xp.Parameters.AddWithValue("@Email", InputEmail.Text);
            xp.Parameters.AddWithValue("@Password", InputPassword.Text);

            User.Open();
            xp.ExecuteNonQuery();
            User.Close();

            if (IsPostBack)
            {
                InputUsername.Text = "";
                InputPassword.Text = "";
                InputEmail.Text = "";
                VerifyPassword.Text = "";

            }    
        }            
        }
    }

Any help is appreciated as i am a beginner to these kinds of errors.

Answer 1

seems to be wrong table name userdatabase or mismatch in table name...

SqlCommand xp = new SqlCommand("Insert into userdatabase(Username, Email,
    Password)Values(@Username, @Email, @Password)", User);
                xp.Parameters.AddWithValue("@Username", InputUsername.Text);
                xp.Parameters.AddWithValue("@Email", InputEmail.Text);
                xp.Parameters.AddWithValue("@Password", InputPassword.Text);