C#中TreeView类操作全攻略（二） - 中国WEB开发者网络 (http://www.webasp.net) -- 技术教程 (http://www.webasp.net/article/) --- C#中TreeView类操作全攻略（二） (http://www.webasp.net/article/13/12415.htm)

-- 作者：未知 -- 发布日期： 2004-08-19

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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