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多選combox控件的制作

using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Drawing;
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using System.Data;
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using System.Text;
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using System.Windows.Forms;
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namespace MyMultifyCombox
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{
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public partial class MulCombox : UserControl
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{
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private bool isVis = false;
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private List<String> insSet = new List<string>();
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public List<String> InsSet
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{
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get { return insSet; }
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set
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{
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insSet = value;
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ProductCmdList();
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}
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}
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public MulCombox()
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{
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InitializeComponent();
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cmdList.Height = 0;
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}
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public void ProductCmdList()
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{
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cmdList.Items.Clear();
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for (int i = 0; i < InsSet.Count; i++)
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{
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cmdList.Items.Add(InsSet[i]);
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}
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cmdList.Height = 74;//當選項超過一定數目出現滾動條
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}
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private void button1_Click(object sender, EventArgs e)
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{
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string txt = String.Empty;
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isVis = !isVis;
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cmdList.Visible = isVis;
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if (isVis == false)
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{
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this.Height = 26;//防止擋住其它控件
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for (int i = 0; i < cmdList.CheckedItems.Count; i++)
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{
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txt = txt + cmdList.CheckedItems[i] + ",";
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}
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tbIns.Clear();
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if (txt.Length > 0)
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{
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tbIns.Text = txt.Remove(txt.Length - 1);
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}
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}
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else
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{
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this.Height = 100;
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}
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}
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private void cmdList_SelectedIndexChanged(object sender, EventArgs e)
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{
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string txt = String.Empty;
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for (int i = 0; i < cmdList.CheckedItems.Count; i++)
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{
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txt = txt + cmdList.CheckedItems[i] + ",";
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}
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tbIns.Clear();
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if (txt.Length > 0)
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{
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tbIns.Text = txt.Remove(txt.Length - 1);
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}
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}
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}
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}

posted on 2008-10-18 15:31 天書閱讀(647) 評論(0) 編輯收藏引用

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