Combo控件用法小结

1.为Combo绑定数据

public static void InitCombo(ComboBox Combo1,bool bUseEmpty)
        {
            try
            {
                ArrayList arrStatus=new ArrayList();  
                if(bUseEmpty==true)
                {
                    arrStatus.Add(new DictionaryEntry("-1",""));
                }
                arrStatus.Add(new DictionaryEntry("0","未完成"));
                arrStatus.Add(new DictionaryEntry("1","已完成"));
                
                Combo1.DataSource=arrStatus;                       
                Combo1.DisplayMember="Value";   
                Combo1.ValueMember="Key";
            }
            catch(Exception err)
            {
                throw new Exception(err.Message);
            }
        }

 2.Combo值的遍历

 

        public static void InitComboByDictionary(ComboBox Combo1,bool bUseAll)
        {
            try
            {
                ArrayList arrStatus=new ArrayList();  
                if(bUseAll==true)
                {
                    arrStatus.Add(new DictionaryEntry("-1","全部"));
                }
                arrStatus.Add(new DictionaryEntry("0","未完成"));
                arrStatus.Add(new DictionaryEntry("1","已完成"));
                
                Combo1.DataSource=arrStatus;                       
                Combo1.DisplayMember="Value";   
                Combo1.ValueMember="Key";
            }
            catch(Exception err)
            {
                throw new Exception(err.Message);
            }
        }

        /// <summary>
        /// 根据Combo的键去查找指定项，并选中该项。
        /// 注意：向Combo的Item中添加的内容必须是DictionaryEntry类型
        /// </summary>
        /// <param name="Combo1">需要查找的ComboBox</param>
        /// <param name="strCmbKey">被查找的Item的键</param>
        public static void SetCombSelItemByValue(ComboBox Combo1,string strCmbKey)
        {
            IEnumerator myEnum =Combo1.Items.GetEnumerator();
            DictionaryEntry dicItem;
            bool bFound=false;
            
            while (myEnum.MoveNext())   
            {  
                dicItem = (DictionaryEntry)myEnum.Current;  
                if(dicItem.Key.ToString()==strCmbKey)
                {
                    Combo1.SelectedItem=dicItem;
                    bFound=true;
                    break;
                }
            }
            if(bFound==false) Combo1.Text="";
        }

        /// <summary>
        /// 根据Combo的值去查找指定项，并选中该项。
        /// 注意：向Combo的Item中添加的内容必须是DictionaryEntry类型
        /// </summary>
        /// <param name="Combo1">需要查找的ComboBox</param>
        /// <param name="strCmbValue">被查找的Item的值</param>
        public static void SetCombSelItemByText(ComboBox Combo1,string strCmbValue)
        {
            IEnumerator myEnum =Combo1.Items.GetEnumerator();
            DictionaryEntry dicItem;
            bool bFound=false;
            
            while (myEnum.MoveNext())   
            {  
                dicItem = (DictionaryEntry)myEnum.Current;  
                if(dicItem.Value.ToString()==strCmbValue)
                {
                    Combo1.SelectedItem=dicItem;
                    bFound=true;
                    break;
                }
            }
            if(bFound==false) Combo1.Text="";
        }