prjeditspec.cs

一个学籍管理系统 以在某高校投入使用了

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

namespace prjClass
{
	/// <summary>
	/// prjEditSpec 的摘要说明。
	/// </summary>
	public class prjEditSpec : System.Windows.Forms.Form
	{
		private Class1 c = new Class1();
		private bool flag = true;
		private Specialty sp = new Specialty();
		private System.Windows.Forms.DataGrid dataGrid1;
		private System.Windows.Forms.Panel panel1;
		private System.Windows.Forms.Button btnUpdate;
		private System.Windows.Forms.Button btnDel;
		private System.Windows.Forms.Button btnCancle;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public prjEditSpec()
		{
			//
			// 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.panel1 = new System.Windows.Forms.Panel();
			this.btnCancle = new System.Windows.Forms.Button();
			this.btnDel = new System.Windows.Forms.Button();
			this.btnUpdate = new System.Windows.Forms.Button();
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
			this.panel1.SuspendLayout();
			this.SuspendLayout();
			// 
			// dataGrid1
			// 
			this.dataGrid1.DataMember = "";
			this.dataGrid1.Dock = System.Windows.Forms.DockStyle.Fill;
			this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
			this.dataGrid1.Location = new System.Drawing.Point(0, 0);
			this.dataGrid1.Name = "dataGrid1";
			this.dataGrid1.ReadOnly = true;
			this.dataGrid1.Size = new System.Drawing.Size(592, 365);
			this.dataGrid1.TabIndex = 0;
			this.dataGrid1.GotFocus += new System.EventHandler(this.dataGrid1_GotFocus);
			this.dataGrid1.CurrentCellChanged += new System.EventHandler(this.dataGrid1_CurrentCellChanged);
			// 
			// panel1
			// 
			this.panel1.Controls.Add(this.btnCancle);
			this.panel1.Controls.Add(this.btnDel);
			this.panel1.Controls.Add(this.btnUpdate);
			this.panel1.Dock = System.Windows.Forms.DockStyle.Bottom;
			this.panel1.Location = new System.Drawing.Point(0, 293);
			this.panel1.Name = "panel1";
			this.panel1.Size = new System.Drawing.Size(592, 72);
			this.panel1.TabIndex = 1;
			// 
			// btnCancle
			// 
			this.btnCancle.Location = new System.Drawing.Point(424, 24);
			this.btnCancle.Name = "btnCancle";
			this.btnCancle.TabIndex = 2;
			this.btnCancle.Text = "取消";
			this.btnCancle.Click += new System.EventHandler(this.btnCancle_Click);
			// 
			// btnDel
			// 
			this.btnDel.Location = new System.Drawing.Point(248, 24);
			this.btnDel.Name = "btnDel";
			this.btnDel.TabIndex = 1;
			this.btnDel.Text = "删除";
			this.btnDel.Click += new System.EventHandler(this.btnDel_Click);
			// 
			// btnUpdate
			// 
			this.btnUpdate.Location = new System.Drawing.Point(64, 24);
			this.btnUpdate.Name = "btnUpdate";
			this.btnUpdate.TabIndex = 0;
			this.btnUpdate.Text = "修改";
			this.btnUpdate.Click += new System.EventHandler(this.btnUpdate_Click);
			// 
			// prjEditSpec
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(592, 365);
			this.Controls.Add(this.panel1);
			this.Controls.Add(this.dataGrid1);
			this.Name = "prjEditSpec";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "专业信息浏览";
			this.Load += new System.EventHandler(this.prjEditSpec_Load);
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
			this.panel1.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		private void prjEditSpec_Load(object sender, System.EventArgs e)
		{
			SetBookTableStyle();
			LoadData();
		}
		private void LoadData()
		{
			DataAccess da = new DataAccess();
			string Sql = "select * from Class..SpecialtyInfo";
			string TableName = "SpecialtyInfo";
			DataTable dt = da.ExecuteDataTable(Sql,TableName);
			this.dataGrid1.DataSource=dt;
			if(c.IsExits(Sql)==false)
			{
				this.flag=false;
			}
		}
		/// <summary>
		/// Lend表的DataGrid样式设定 
		/// </summary>
		private void SetBookTableStyle()
		{
			DataGridTableStyle dgs = new DataGridTableStyle();
			dgs.MappingName = "SpecialtyInfo";
			this.dataGrid1.TableStyles.Add(dgs);

			DataGridColumnStyle dgs1 = new DataGridTextBoxColumn();
			dgs1.HeaderText="编号";
			dgs1.MappingName="SpecialtyId";
			dgs1.Width=100;
			
			DataGridColumnStyle dgs2 = new DataGridTextBoxColumn();
			dgs2.HeaderText="专业名称";
			dgs2.MappingName="SpecialtyName";
			dgs2.Width=100;

			DataGridColumnStyle dgs3 = new DataGridTextBoxColumn();
			dgs3.HeaderText="专业描述";
			dgs3.MappingName="Memo";
			dgs3.Width=350;

			dgs.GridColumnStyles.Add(dgs1);
			dgs.GridColumnStyles.Add(dgs2);
			dgs.GridColumnStyles.Add(dgs3);
		}

		private void btnCancle_Click(object sender, System.EventArgs e)
		{
			this.Close();
		}

		private void btnDel_Click(object sender, System.EventArgs e)
		{
			string Sql = "select * from Class..ClassInfo where SpecialtyName = '"+this.dataGrid1.CaptionText+"'";
			if(this.dataGrid1.CaptionText=="")
			{
				MessageBox.Show("请选择要删除的专业?","提示信息!",MessageBoxButtons.OK,MessageBoxIcon.Question);
			}
			else if(c.IsExits(Sql)==true)
			{
				MessageBox.Show("请先删除与此专业相关的班级?","提示信息!",MessageBoxButtons.OK,MessageBoxIcon.Question);
			}
			else
			{
				if(MessageBox.Show("确认删除此专业?","提示信息!",MessageBoxButtons.OKCancel,MessageBoxIcon.Question,MessageBoxDefaultButton.Button2)==DialogResult.OK)
				{
					string Sql1 = "delete from Class..SpecialtyInfo where SpecialtyName = '"+this.dataGrid1.CaptionText+"'";
					c.EditData(Sql1);
					LoadData();
				}
			}
		 }

		private void dataGrid1_CurrentCellChanged(object sender, EventArgs e)
		{

			if(this.flag==true)
			{
				this.dataGrid1.CaptionText=this.dataGrid1[this.dataGrid1.CurrentRowIndex,1].ToString();
				this.sp.ID=this.dataGrid1[this.dataGrid1.CurrentRowIndex,0].ToString();
				this.sp.Name=this.dataGrid1[this.dataGrid1.CurrentRowIndex,1].ToString();
				this.sp.Memo=this.dataGrid1[this.dataGrid1.CurrentRowIndex,2].ToString();
			}
		}

		private void dataGrid1_GotFocus(object sender, EventArgs e)
		{
			if(this.flag==true)
			{
				this.dataGrid1.CaptionText=this.dataGrid1[this.dataGrid1.CurrentRowIndex,1].ToString();
				this.sp.ID=this.dataGrid1[this.dataGrid1.CurrentRowIndex,0].ToString();
				this.sp.Name=this.dataGrid1[this.dataGrid1.CurrentRowIndex,1].ToString();
				this.sp.Memo=this.dataGrid1[this.dataGrid1.CurrentRowIndex,2].ToString();
			}
		}

		private void btnUpdate_Click(object sender, System.EventArgs e)
		{
			if(this.dataGrid1.CaptionText=="")
			{
				MessageBox.Show("请选择要修改的专业?","提示信息!",MessageBoxButtons.OK,MessageBoxIcon.Question);
			}
			else
			{
				frmUpdateSpc f = new frmUpdateSpc(this.sp);
				f.UpdateSpeEvent+=new UpdatSpeHandler(f_UpdateSpeEvent);
				
				f.ShowDialog();
			}
		}

		private void f_UpdateSpeEvent()
		{
			LoadData();
		}
	}
}