How to insert data to ms SQL server using c#.net

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C#

Dear all,

I am using visual studio 2015, I have a problem with insert data to database of SQL server.
Here is my code:

try
        {
            SqlConnection conn = new SqlConnection(@"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=C:\Users\Mohammad\Desktop\loginpage\App_Data\CMS.mdf;Integrated Security=True");
            conn.Open();
            string insert_query = "insert into Table (username,email,password,country) values (@username ,@email ,@password ,@country)";
            SqlCommand cmd = new SqlCommand(insert_query, conn);
            cmd.Parameters.AddWithValue("@username", t_username.Text);
            cmd.Parameters.AddWithValue("@email", t_email.Text);
            cmd.Parameters.AddWithValue("@password", t_password.Text);
            cmd.Parameters.AddWithValue("@country", D_country.SelectedItem.ToString());

            cmd.ExecuteNonQuery();
            Response.Redirect("manegar.aspx");
            Response.Write("Registration Is Successfully");
            conn.Close();
        }
        catch (Exception ex)
        {
            Response.Write("ERORR:" + ex.ToString());

        }
    }
}

What I have tried:

ERORR:System.Data.SqlClient.SqlException (0x80131904): Incorrect syntax near the keyword 'Table'. at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, Boolean inRetry, SqlDataReader ds, Boolean describeParameterEncryptionRequest) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry) at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry) at System.Data.SqlClient.SqlCommand.ExecuteNonQuery() at login.Button1_Click(Object sender, EventArgs e) in c:\Users\Mohammad\Desktop\loginpage\login.aspx.cs:line 33 ClientConnectionId:fb623e67-d06e-45d3-9133-53f264d26604 Error Number:156,State:1,Class:15