修改密码.cs

简单的教师录入成绩系统

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

namespace 教师网上录入成绩
{
	/// <summary>
	/// 修改密码 的摘要说明。
	/// </summary>
	public class 修改密码 : System.Windows.Forms.Form
	{

		private CurrencyManager cmOrders;//用于数据导航控制
		private System.Windows.Forms.DataGrid dataGrid1;
		private System.Data.SqlClient.SqlDataAdapter sqlDataAdapter1;
		private System.Data.SqlClient.SqlConnection sqlConnection1;
		private 教师网上录入成绩.DataSet9 dataSet91;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.Button button3;
		private System.Data.SqlClient.SqlCommand sqlSelectCommand1;
		private System.Data.SqlClient.SqlCommand sqlInsertCommand1;
		private System.Data.SqlClient.SqlCommand sqlUpdateCommand1;
		private System.Data.SqlClient.SqlCommand sqlDeleteCommand1;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.TextBox textBox3;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public 修改密码()
		{
			//
			// 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()
		{
			this.dataGrid1 = new System.Windows.Forms.DataGrid();
			this.dataSet91 = new 教师网上录入成绩.DataSet9();
			this.sqlDataAdapter1 = new System.Data.SqlClient.SqlDataAdapter();
			this.sqlDeleteCommand1 = new System.Data.SqlClient.SqlCommand();
			this.sqlConnection1 = new System.Data.SqlClient.SqlConnection();
			this.sqlInsertCommand1 = new System.Data.SqlClient.SqlCommand();
			this.sqlSelectCommand1 = new System.Data.SqlClient.SqlCommand();
			this.sqlUpdateCommand1 = new System.Data.SqlClient.SqlCommand();
			this.label1 = new System.Windows.Forms.Label();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.label2 = new System.Windows.Forms.Label();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.button1 = new System.Windows.Forms.Button();
			this.groupBox1 = new System.Windows.Forms.GroupBox();
			this.button3 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.label3 = new System.Windows.Forms.Label();
			this.textBox3 = new System.Windows.Forms.TextBox();
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
			((System.ComponentModel.ISupportInitialize)(this.dataSet91)).BeginInit();
			this.groupBox1.SuspendLayout();
			this.SuspendLayout();
			// 
			// dataGrid1
			// 
			this.dataGrid1.DataMember = "教师基本信息";
			this.dataGrid1.DataSource = this.dataSet91;
			this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
			this.dataGrid1.Location = new System.Drawing.Point(16, 24);
			this.dataGrid1.Name = "dataGrid1";
			this.dataGrid1.Size = new System.Drawing.Size(272, 96);
			this.dataGrid1.TabIndex = 0;
			// 
			// dataSet91
			// 
			this.dataSet91.DataSetName = "DataSet9";
			this.dataSet91.Locale = new System.Globalization.CultureInfo("zh-CN");
			// 
			// sqlDataAdapter1
			// 
			this.sqlDataAdapter1.DeleteCommand = this.sqlDeleteCommand1;
			this.sqlDataAdapter1.InsertCommand = this.sqlInsertCommand1;
			this.sqlDataAdapter1.SelectCommand = this.sqlSelectCommand1;
			this.sqlDataAdapter1.TableMappings.AddRange(new System.Data.Common.DataTableMapping[] {
																									  new System.Data.Common.DataTableMapping("Table", "教师基本信息", new System.Data.Common.DataColumnMapping[] {
																																																				new System.Data.Common.DataColumnMapping("教师号", "教师号"),
																																																				new System.Data.Common.DataColumnMapping("姓名", "姓名"),
																																																				new System.Data.Common.DataColumnMapping("密码", "密码")})});
			this.sqlDataAdapter1.UpdateCommand = this.sqlUpdateCommand1;
			// 
			// sqlDeleteCommand1
			// 
			this.sqlDeleteCommand1.CommandText = "DELETE FROM 教师基本信息 WHERE (教师号 = @Original_教师号) AND (姓名 = @Original_姓名) AND (密码 = " +
				"@Original_密码 OR @Original_密码 IS NULL AND 密码 IS NULL)";
			this.sqlDeleteCommand1.Connection = this.sqlConnection1;
			this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_教师号", System.Data.SqlDbType.VarChar, 16, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "教师号", System.Data.DataRowVersion.Original, null));
			this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_姓名", System.Data.SqlDbType.VarChar, 20, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "姓名", System.Data.DataRowVersion.Original, null));
			this.sqlDeleteCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_密码", System.Data.SqlDbType.VarChar, 10, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "密码", System.Data.DataRowVersion.Original, null));
			// 
			// sqlConnection1
			// 
			this.sqlConnection1.ConnectionString = "workstation id=3366359E777E4EE;packet size=4096;integrated security=SSPI;data sou" +
				"rce=3366359E777E4EE;persist security info=False;initial catalog=jiaoshi";
			// 
			// sqlInsertCommand1
			// 
			this.sqlInsertCommand1.CommandText = "INSERT INTO 教师基本信息(教师号, 姓名, 密码) VALUES (@教师号, @姓名, @密码); SELECT 教师号, 姓名, 密码 FROM " +
				"教师基本信息 WHERE (教师号 = @教师号)";
			this.sqlInsertCommand1.Connection = this.sqlConnection1;
			this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@教师号", System.Data.SqlDbType.VarChar, 16, "教师号"));
			this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@姓名", System.Data.SqlDbType.VarChar, 20, "姓名"));
			this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@密码", System.Data.SqlDbType.VarChar, 10, "密码"));
			// 
			// sqlSelectCommand1
			// 
			this.sqlSelectCommand1.CommandText = "SELECT 教师号, 姓名, 密码 FROM 教师基本信息 WHERE (教师号 LIKE @Param2) AND (密码 LIKE @Param3)";
			this.sqlSelectCommand1.Connection = this.sqlConnection1;
			this.sqlSelectCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Param2", System.Data.SqlDbType.VarChar, 16, "教师号"));
			this.sqlSelectCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Param3", System.Data.SqlDbType.VarChar, 10, "密码"));
			// 
			// sqlUpdateCommand1
			// 
			this.sqlUpdateCommand1.CommandText = "UPDATE 教师基本信息 SET 教师号 = @教师号, 姓名 = @姓名, 密码 = @密码 WHERE (教师号 = @Original_教师号) AND " +
				"(姓名 = @Original_姓名) AND (密码 = @Original_密码 OR @Original_密码 IS NULL AND 密码 IS NUL" +
				"L); SELECT 教师号, 姓名, 密码 FROM 教师基本信息 WHERE (教师号 = @教师号)";
			this.sqlUpdateCommand1.Connection = this.sqlConnection1;
			this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@教师号", System.Data.SqlDbType.VarChar, 16, "教师号"));
			this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@姓名", System.Data.SqlDbType.VarChar, 20, "姓名"));
			this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@密码", System.Data.SqlDbType.VarChar, 10, "密码"));
			this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_教师号", System.Data.SqlDbType.VarChar, 16, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "教师号", System.Data.DataRowVersion.Original, null));
			this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_姓名", System.Data.SqlDbType.VarChar, 20, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "姓名", System.Data.DataRowVersion.Original, null));
			this.sqlUpdateCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_密码", System.Data.SqlDbType.VarChar, 10, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "密码", System.Data.DataRowVersion.Original, null));
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(24, 128);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(72, 32);
			this.label1.TabIndex = 1;
			this.label1.Text = "教师号";
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(128, 128);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(112, 21);
			this.textBox1.TabIndex = 2;
			this.textBox1.Text = "";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(24, 40);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(72, 32);
			this.label2.TabIndex = 3;
			this.label2.Text = "新密码";
			// 
			// textBox2
			// 
			this.textBox2.DataBindings.Add(new System.Windows.Forms.Binding("Text", this.dataSet91, "教师基本信息.密码"));
			this.textBox2.Location = new System.Drawing.Point(128, 40);
			this.textBox2.Name = "textBox2";
			this.textBox2.Size = new System.Drawing.Size(96, 21);
			this.textBox2.TabIndex = 4;
			this.textBox2.Text = "";
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(280, 144);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(64, 40);
			this.button1.TabIndex = 5;
			this.button1.Text = "查找";
			this.button1.Click += new System.EventHandler(this.button1_Click_1);
			// 
			// groupBox1
			// 
			this.groupBox1.Controls.Add(this.button3);
			this.groupBox1.Controls.Add(this.button2);
			this.groupBox1.Controls.Add(this.textBox2);
			this.groupBox1.Controls.Add(this.label2);
			this.groupBox1.Location = new System.Drawing.Point(24, 216);
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(352, 176);
			this.groupBox1.TabIndex = 6;
			this.groupBox1.TabStop = false;
			this.groupBox1.Text = " 修改密码";
			// 
			// button3
			// 
			this.button3.Location = new System.Drawing.Point(136, 88);
			this.button3.Name = "button3";
			this.button3.Size = new System.Drawing.Size(88, 32);
			this.button3.TabIndex = 6;
			this.button3.Text = "提交";
			this.button3.Click += new System.EventHandler(this.button3_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(24, 88);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(72, 32);
			this.button2.TabIndex = 5;
			this.button2.Text = "修改";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(24, 168);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(56, 24);
			this.label3.TabIndex = 7;
			this.label3.Text = "密码";
			// 
			// textBox3
			// 
			this.textBox3.Location = new System.Drawing.Point(128, 168);
			this.textBox3.Name = "textBox3";
			this.textBox3.PasswordChar = '*';
			this.textBox3.Size = new System.Drawing.Size(112, 21);
			this.textBox3.TabIndex = 8;
			this.textBox3.Text = "";
			// 
			// 修改密码
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(448, 405);
			this.Controls.Add(this.textBox3);
			this.Controls.Add(this.label3);
			this.Controls.Add(this.groupBox1);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.textBox1);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.dataGrid1);
			this.Name = "修改密码";
			this.Text = "修改密码";
			this.Load += new System.EventHandler(this.修改密码_Load);
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
			((System.ComponentModel.ISupportInitialize)(this.dataSet91)).EndInit();
			this.groupBox1.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		private void 修改密码_Load(object sender, System.EventArgs e)
		{
			this.dataGrid1.Enabled = false;
			this.textBox2.Enabled = false;
			this.cmOrders=(CurrencyManager) BindingContext[dataSet91,"教师基本信息"];
			
		}

		

		

		private void button1_Click_1(object sender, System.EventArgs e)
		{
			if(this.textBox1.Text != "" )
			{
				this.sqlDataAdapter1.SelectCommand.Parameters[0].Value = this.textBox1.Text;
				this.sqlDataAdapter1.SelectCommand.Parameters[1].Value = this.textBox3.Text;
				this.textBox2.Enabled = true;
				
			}
			this.dataSet91.Clear();
			try
			{
				this.sqlDataAdapter1.Fill(this.dataSet91);
			}
			catch(Exception ex)
			{
				MessageBox.Show(ex.Message);
			}

		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			this.textBox2.Clear();
			this.textBox2.Focus();
		
		}

		private void button3_Click(object sender, System.EventArgs e)
		{
			
			bool canSubmit;
			canSubmit=this.CheckNotNull();
			if(canSubmit==false)//有非空值字段为空，不允许提交
			{
				return;
			}
			cmOrders.EndCurrentEdit();
			if(dataSet91.GetChanges()!=null)
			{
				try
				{
					this.sqlDataAdapter1.Update(dataSet91);
					
				}
				catch(Exception express)
				{
					MessageBox.Show(express.ToString(),"提示",MessageBoxButtons.OK,MessageBoxIcon.Error);
					dataSet91.RejectChanges();
				}
			}
//			this.Close();
		}
		protected virtual bool CheckNotNull()
		{
			return(true);
		}
	}
}