/// <summary>

/// 绑定ComboBox

/// </summary>

/// <param name="cmb">ComboBox控件</param>

/// <param name="cityNo">根地区编号</param>

/// <param name="pre">传入string.Empty</param>

/// <param name="level">传入0</param>

public static void BindComboBoxTree(ComboBox cmb, string cityNo, string pre, int level)

{

IList<AreaTInfo> areaList = CacheData.Instince.GetCache("AreaList") as IList<AreaTInfo>;

if (areaList == null)

{

IReprotService _porxy = ServiceProxyFactory.Create<IReprotService>("ReportService");

areaList = _porxy.GetAreaInfo().ToList<AreaTInfo>();

CacheData.Instince.SetCache("AreaList", areaList);

}

List<AreaTInfo> list = new List<AreaTInfo>();

foreach (AreaTInfo ai in areaList)

{

if (ai.F_AreaSN == cityNo)

{

list.Add(ai);

}

}

string temPre = string.Empty;

if (level > 0)  //判断是否是跟节点

{

temPre = pre + "|--";

}

foreach (AreaTInfo item in list)  //

{

item.AreaName = temPre + item.AreaName;

cmb.Items.Add(item);

level++;

BindComboBoxTree(cmb, item.AreaSN, temPre, level);  //递归实现

}

cmb.ValueMember = "AreaSN"; //实体类中显示的值

cmb.DisplayMember = "AreaName"; //对应实体类中的值

cmb.SelectedIndex = 0;

}

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读出combobox的值时

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AreaTInfo temparea = this.com_Area.SelectedItem asAreaTInfo;  //AreaTInfo为实体类 Com_Area为combobox控件

if (temparea != null)

{

StrAreaSN = temparea.AreaSN;  //读取实体类中的AreaSN

}

else

{

StrAreaSN = "";

}

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