.NET C#登录界面
这是一个登录界面，判断是否登录成功。
麻烦各位高手帮忙找下这个错在哪里，要怎么改，谢谢
还有，调试还提示“类、结构或接口成员声明中的标记"this","=",","无效


using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

namespace MainFrm
{
/// <summary>
/// Form2 的摘要说明。
/// </summary>
public class Form2 : System.Windows.Forms.Form
{
//调试时提示这里错误this.ds = xj.SelectDataBase (sendStrSQL,sendTableName);this.myTable = ds.Tables [0];
public static bool blCanLogin = false;
private DataSet ds= new DataSet ();
private DataTable myTable;
private DataRow myRow;
private string sendStrSQL="select * from 用户信息 ";
xjDataBase xj = new xjDataBase ();
string sendTableName = "用户信息";
this.ds = xj.SelectDataBase (sendStrSQL,sendTableName);
this.myTable = ds.Tables [0];


private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;

public Form2()
{

//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();

//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}

/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}

#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form2));
this.textBox1 = new System.Windows.Forms.TextBox();
this.textBox2 = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.SuspendLayout();
// 
// textBox1
// 
this.textBox1.Location = new System.Drawing.Point(200, 80);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(144, 21);
this.textBox1.TabIndex = 0;
this.textBox1.Text = "";
// 
// textBox2
// 
this.textBox2.Location = new System.Drawing.Point(200, 152);
this.textBox2.Name = "textBox2";
this.textBox2.Size = new System.Drawing.Size(144, 21);
this.textBox2.TabIndex = 1;
this.textBox2.Text = "";
// 
// label1
// 
this.label1.Location = new System.Drawing.Point(64, 80);
this.label1.Name = "label1";
this.label1.TabIndex = 2;
this.label1.Text = "用户名";
// 
// label2
// 
this.label2.Location = new System.Drawing.Point(64, 152);
this.label2.Name = "label2";
this.label2.TabIndex = 3;
this.label2.Text = "密码";
// 
// button1
// 
this.button1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(128)), ((System.Byte)(128)), ((System.Byte)(255)));
this.button