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『原创』C#中TreeView类操作全攻略:建立树,新增节点,删除节点,修改节点,拖动节点,与Oracle数据库交互操作(二)

王朝oracle·作者佚名  2006-01-09
窄屏简体版  字體: |||超大  

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.Windows.Forms;

using System.Data;

using com.prm.client.tools;

using System.Data.OracleClient;

//using com.prm.client.common;

namespace com.prm.client.forms

{

/// <summary>

/// SM_AddNewFunction 的摘要说明。

/// </summary>

public class SM_AddNewFunction: System.Windows.Forms.Form

{

private System.Windows.Forms.Label lbl_Name;

private System.Windows.Forms.TextBox txt_Name;

private System.Windows.Forms.Label lbl_Tag;

private System.Windows.Forms.TextBox txt_Tag;

private System.Windows.Forms.CheckBox ckb_IsInterface;

private System.Windows.Forms.Label lbl_IsInterface;

private System.Windows.Forms.Label lbl_Type;

private System.Windows.Forms.Label lbl_FunEntity;

private System.Windows.Forms.ComboBox cbo_Type;

private System.Windows.Forms.TextBox txt_FunEntity;

private System.Windows.Forms.Label lbl_BelongTo;

private System.Windows.Forms.TextBox txt_BelongTo;

private System.Windows.Forms.TextBox txt_Detail;

private System.Windows.Forms.Label lbl_Detail;

private System.Windows.Forms.Button btn_Confirm;

private System.Windows.Forms.Button btn_Cancel;

private System.Windows.Forms.Button btn_Help;

//用来保存数字字典功能类别的数据

ClientDictionary[] DIC_funcType;

//用来保存Connection属性

private OracleConnection funcTableConn;

//用来保存新增加的记录的主键(功能ID)

private long newFuncID;

//只读属性,用来读取新增加的记录的主键(功能ID)

//public long NewFuncID {get {return newFuncID;}}

//用来保存新增加的功能记录

private FunctionTable newFuncItem;

public FunctionTable NewFuncItem {get {return newFuncItem;}}

/// <summary>

/// 必需的设计器变量。

/// </summary>

private System.ComponentModel.Container components = null;

/// <summary>

/// 构造函数,通过参数dic_funcType对窗口进行初始化值,通过参数fatherID得到

/// 新增加的功能的上级功能ID

/// </summary>

public SM_AddNewFunction(long fatherID,ClientDictionary[] dic_funcType)

{

//

// Windows 窗体设计器支持所必需的

//

InitializeComponent();

newFuncItem=new FunctionTable();

newFuncItem.funcFatherID=fatherID;

//初始化ID为-1,如果新增成功则将重新赋值

newFuncItem.funcID=-1;

DIC_funcType=dic_funcType;

const string VALUEMEMBER="valueMember",DISPLAYMEMBER="displayMember",NULLTEXT="";

cbo_Type.DataSource = DIC_funcType;

cbo_Type.ValueMember = VALUEMEMBER;

cbo_Type.DisplayMember = DISPLAYMEMBER;

DataAccessObject funcTableAccessObject=new DataAccessObject();

funcTableConn=funcTableAccessObject.Connection;

}

/// <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(SM_AddNewFunction));

this.lbl_Name = new System.Windows.Forms.Label();

this.lbl_Tag = new System.Windows.Forms.Label();

this.lbl_Type = new System.Windows.Forms.Label();

this.lbl_FunEntity = new System.Windows.Forms.Label();

this.lbl_BelongTo = new System.Windows.Forms.Label();

this.txt_Name = new System.Windows.Forms.TextBox();

this.txt_Tag = new System.Windows.Forms.TextBox();

this.cbo_Type = new System.Windows.Forms.ComboBox();

this.txt_BelongTo = new System.Windows.Forms.TextBox();

this.txt_Detail = new System.Windows.Forms.TextBox();

this.lbl_Detail = new System.Windows.Forms.Label();

this.ckb_IsInterface = new System.Windows.Forms.CheckBox();

this.btn_Confirm = new System.Windows.Forms.Button();

this.btn_Cancel = new System.Windows.Forms.Button();

this.btn_Help = new System.Windows.Forms.Button();

this.lbl_IsInterface = new System.Windows.Forms.Label();

this.txt_FunEntity = new System.Windows.Forms.TextBox();

this.SuspendLayout();

//

// lbl_Name

//

this.lbl_Name.Location = new System.Drawing.Point(56, 24);

this.lbl_Name.Name = "lbl_Name";

this.lbl_Name.Size = new System.Drawing.Size(48, 23);

this.lbl_Name.TabIndex = 0;

this.lbl_Name.Text = "名称:";

//

// lbl_Tag

//

this.lbl_Tag.Location = new System.Drawing.Point(56, 56);

this.lbl_Tag.Name = "lbl_Tag";

this.lbl_Tag.Size = new System.Drawing.Size(48, 23);

this.lbl_Tag.TabIndex = 1;

this.lbl_Tag.Text = "标识:";

//

// lbl_Type

//

this.lbl_Type.Location = new System.Drawing.Point(56, 112);

this.lbl_Type.Name = "lbl_Type";

this.lbl_Type.Size = new System.Drawing.Size(48, 23);

this.lbl_Type.TabIndex = 2;

this.lbl_Type.Text = "类别:";

//

// lbl_FunEntity

//

this.lbl_FunEntity.Location = new System.Drawing.Point(32, 144);

this.lbl_FunEntity.Name = "lbl_FunEntity";

this.lbl_FunEntity.Size = new System.Drawing.Size(72, 23);

this.lbl_FunEntity.TabIndex = 3;

this.lbl_FunEntity.Text = " 功能体:";

//

// lbl_BelongTo

//

this.lbl_BelongTo.Location = new System.Drawing.Point(8, 176);

this.lbl_BelongTo.Name = "lbl_BelongTo";

this.lbl_BelongTo.Size = new System.Drawing.Size(96, 23);

this.lbl_BelongTo.TabIndex = 4;

this.lbl_BelongTo.Text = "所属窗口标识:";

//

// txt_Name

//

this.txt_Name.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(30)), ((System.Byte)(66)), ((System.Byte)(94)));

this.txt_Name.Location = new System.Drawing.Point(104, 16);

this.txt_Name.Name = "txt_Name";

this.txt_Name.Size = new System.Drawing.Size(152, 21);

this.txt_Name.TabIndex = 5;

this.txt_Name.Text = "";

//

// txt_Tag

//

this.txt_Tag.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(30)), ((System.Byte)(66)), ((System.Byte)(94)));

this.txt_Tag.Location = new System.Drawing.Point(104, 48);

this.txt_Tag.Name = "txt_Tag";

this.txt_Tag.Size = new System.Drawing.Size(152, 21);

this.txt_Tag.TabIndex = 6;

this.txt_Tag.Text = "";

//

// cbo_Type

//

this.cbo_Type.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;

this.cbo_Type.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(30)), ((System.Byte)(66)), ((System.Byte)(94)));

this.cbo_Type.Location = new System.Drawing.Point(104, 104);

this.cbo_Type.Name = "cbo_Type";

this.cbo_Type.Size = new System.Drawing.Size(152, 20);

this.cbo_Type.TabIndex = 7;

//

// txt_BelongTo

//

this.txt_BelongTo.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(30)), ((System.Byte)(66)), ((System.Byte)(94)));

this.txt_BelongTo.Location = new System.Drawing.Point(104, 168);

this.txt_BelongTo.Name = "txt_BelongTo";

this.txt_BelongTo.Size = new System.Drawing.Size(152, 21);

this.txt_BelongTo.TabIndex = 8;

this.txt_BelongTo.Text = "";

//

// txt_Detail

//

this.txt_Detail.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(30)), ((System.Byte)(66)), ((System.Byte)(94)));

this.txt_Detail.Location = new System.Drawing.Point(104, 200);

this.txt_Detail.Name = "txt_Detail";

this.txt_Detail.Size = new System.Drawing.Size(152, 21);

this.txt_Detail.TabIndex = 9;

this.txt_Detail.Text = "";

//

// lbl_Detail

//

this.lbl_Detail.Location = new System.Drawing.Point(56, 208);

this.lbl_Detail.Name = "lbl_Detail";

this.lbl_Detail.Size = new System.Drawing.Size(48, 23);

this.lbl_Detail.TabIndex = 10;

this.lbl_Detail.Text = "描述:";

//

// ckb_IsInterface

//

this.ckb_IsInterface.Location = new System.Drawing.Point(104, 72);

this.ckb_IsInterface.Name = "ckb_IsInterface";

this.ckb_IsInterface.Size = new System.Drawing.Size(24, 24);

this.ckb_IsInterface.TabIndex = 11;

//

// btn_Confirm

//

this.btn_Confirm.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("btn_Confirm.BackgroundImage")));

this.btn_Confirm.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(30)), ((System.Byte)(66)), ((System.Byte)(94)));

this.btn_Confirm.Location = new System.Drawing.Point(40, 240);

this.btn_Confirm.Name = "btn_Confirm";

this.btn_Confirm.Size = new System.Drawing.Size(64, 22);

this.btn_Confirm.TabIndex = 12;

this.btn_Confirm.Text = "确 定";

this.btn_Confirm.Click += new System.EventHandler(this.btn_Confirm_Click);

//

// btn_Cancel

//

this.btn_Cancel.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("btn_Cancel.BackgroundImage")));

this.btn_Cancel.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(30)), ((System.Byte)(66)), ((System.Byte)(94)));

this.btn_Cancel.Location = new System.Drawing.Point(128, 240);

this.btn_Cancel.Name = "btn_Cancel";

this.btn_Cancel.Size = new System.Drawing.Size(64, 22);

this.btn_Cancel.TabIndex = 13;

this.btn_Cancel.Text = "取 消";

this.btn_Cancel.Click += new System.EventHandler(this.btn_Cancel_Click);

//

// btn_Help

//

this.btn_Help.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("btn_Help.BackgroundImage")));

this.btn_Help.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(30)), ((System.Byte)(66)), ((System.Byte)(94)));

this.btn_Help.Location = new System.Drawing.Point(216, 240);

this.btn_Help.Name = "btn_Help";

this.btn_Help.Size = new System.Drawing.Size(64, 22);

this.btn_Help.TabIndex = 14;

this.btn_Help.Text = "帮 助";

//

// lbl_IsInterface

//

this.lbl_IsInterface.Location = new System.Drawing.Point(32, 80);

this.lbl_IsInterface.Name = "lbl_IsInterface";

this.lbl_IsInterface.Size = new System.Drawing.Size(72, 23);

this.lbl_IsInterface.TabIndex = 15;

this.lbl_IsInterface.Text = "有无界面:";

//

// txt_FunEntity

//

this.txt_FunEntity.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(30)), ((System.Byte)(66)), ((System.Byte)(94)));

this.txt_FunEntity.Location = new System.Drawing.Point(104, 136);

this.txt_FunEntity.Name = "txt_FunEntity";

this.txt_FunEntity.Size = new System.Drawing.Size(152, 21);

this.txt_FunEntity.TabIndex = 16;

this.txt_FunEntity.Text = "";

//

// SM_AddNewFunction

//

this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);

this.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(242)), ((System.Byte)(247)), ((System.Byte)(250)));

this.ClientSize = new System.Drawing.Size(320, 273);

this.Controls.Add(this.txt_FunEntity);

this.Controls.Add(this.lbl_IsInterface);

this.Controls.Add(this.btn_Help);

this.Controls.Add(this.btn_Cancel);

this.Controls.Add(this.btn_Confirm);

this.Controls.Add(this.ckb_IsInterface);

this.Controls.Add(this.lbl_Detail);

this.Controls.Add(this.txt_Detail);

this.Controls.Add(this.txt_BelongTo);

this.Controls.Add(this.cbo_Type);

this.Controls.Add(this.txt_Tag);

this.Controls.Add(this.txt_Name);

this.Controls.Add(this.lbl_BelongTo);

this.Controls.Add(this.lbl_FunEntity);

this.Controls.Add(this.lbl_Type);

this.Controls.Add(this.lbl_Tag);

this.Controls.Add(this.lbl_Name);

this.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(30)), ((System.Byte)(66)), ((System.Byte)(94)));

this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));

this.Name = "SM_AddNewFunction";

this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;

this.Text = "新增功能";

this.ResumeLayout(false);

}

#endregion

/// <summary>

/// 按确定按钮后,先检查输入的数据的合法性;

/// 接着根据输入对变量newFuncItem进行相应的赋值,然后调用InsertFuncItem过程在功能表中增加一条记录

/// </summary>

private void btn_Confirm_Click(object sender, System.EventArgs e)

{

if(txt_Name.Text=="")

{

MessageBox.Show("功能名称不能为空");

return;

}

if(txt_Tag.Text=="")

{

MessageBox.Show("功能标识不能为空");

return;

}

if(this.txt_FunEntity.Text=="")

{

MessageBox.Show("功能体不能为空");

return;

}

newFuncItem.funcName=txt_Name.Text.Trim();

newFuncItem.funcTag=txt_Tag.Text.Trim();

if(this.ckb_IsInterface.Checked==true)

{

newFuncItem.funcIsInterface="1";

}

else

{

newFuncItem.funcIsInterface="0";

}

newFuncItem.funcID=QueryNextFuncID();

//如果新生成的ID为0则表示没有成功自动生成新ID,应该返回,不再执行增加操作。

if(newFuncItem.funcID==0) return;

newFuncItem.funcType=this.cbo_Type.SelectedValue.ToString().Trim();

newFuncItem.funcEntity=this.txt_FunEntity.Text.Trim();

newFuncItem.funcBelongTo=this.txt_BelongTo.Text.Trim();

newFuncItem.funcDetail=this.txt_Detail.Text.Trim();

newFuncItem.funcIsExpand="";

newFuncItem.funcVer="";

InsertFuncItem(newFuncItem);

this.Close();

}

/// <summary>

///输出自动生成的ID号,如果生成失败则输出0

/// </summary>

private long QueryNextFuncID()

{

funcTableConn.Open ();

OracleCommand mySelectCmd= new OracleCommand();

mySelectCmd.Connection = funcTableConn;

mySelectCmd.CommandText = "select SEQ_功能.nextval from dual";

mySelectCmd.CommandType = CommandType.Text ;

long nextID=0;

try

{

OracleDataReader myReader = mySelectCmd.ExecuteReader();

myReader.Read();

nextID= myReader.GetInt64(0);

myReader.Close();

}

catch(Exception ex)

{

MessageBox.Show("查询时出现错误:"+ex.ToString());

}

finally

{

funcTableConn.Close ( ) ;

}

return nextID;

}

/// <summary>

/// 在功能表中插入一条新记录,利用了回滚功能,即如果插入不成功则功能表

/// 恢复为插入前的状态

/// </summary>

/// <param name="newItem">要插入的新纪录的信息</param>

private void InsertFuncItem(FunctionTable newItem)

{

funcTableConn.Open();

System.Data.OracleClient.OracleTransaction myTran = funcTableConn.BeginTransaction ();

try

{

OracleCommand cmd = new OracleCommand ();

cmd.CommandText = "INSERT INTO 功能 (功能ID,功能标识,功能名称,功能简述, 所属窗体,有无界面,功能类别,功能体,上级功能ID,可否展显,版本号) values ('"

+newItem.funcID+"', '"

+newItem.funcTag+"', '"

+newItem.funcName+"', '"

+newItem.funcDetail+"', '"

+newItem.funcBelongTo+"', '"

+newItem.funcIsInterface+"', '"

+newItem.funcType+"', '"

+newItem.funcEntity+"', '"

+newItem.funcFatherID+"', '"

+newItem.funcIsExpand+"', '"

+newItem.funcVer+"')";

cmd.Transaction = myTran;

cmd.Connection =funcTableConn;

cmd.ExecuteNonQuery ();

myTran.Commit ();

}

catch(Exception ee)

{

try

{

myTran.Rollback();

}

catch (OracleException ex)

{

if (myTran.Connection != null)

{

MessageBox.Show ("在回滚时发生 " + ex.GetType() +" 异常!",

"警告",System.Windows.Forms.MessageBoxButtons.OK,

System.Windows.Forms.MessageBoxIcon.Warning);

}

}

MessageBox.Show ("发生" + ee.GetType() +

"异常\n" +"没有添加任何记录!","警告",System.Windows.Forms.MessageBoxButtons.OK,

System.Windows.Forms.MessageBoxIcon.Warning);

}

finally

{

funcTableConn.Close();

}

}

private void btn_Cancel_Click(object sender, System.EventArgs e)

{

//如果点击取消的话则newFuncItem.funcID赋值为-1

newFuncItem.funcID=-1;

this.Close();

}

}

}

 
 
 
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