private void LoadUsageList()
{
this.cmbUsage.Items.Add("无");
//从数据库加载
List <UsageItem> usageLst = BankCardSQL.LoadUseageList();
if (usageLst != null)
{
//加载成功，则逐个添加到下拉列表
foreach (UsageItem item in usageLst)
{
this.cmbUsage.Items.Add(item);
}
}
}
private void btnLoadUse_Click(object sender, EventArgs e)
{
//先清空界面
this.lstUsage.Items.Clear();
//从数据库加载现有用途列表
List <UsageItem> usageLst = BankCardSQL.LoadUseageList();
if (usageLst != null)
{
//加载成功，则显示到界面
foreach (UsageItem item in usageLst)
{
this.lstUsage.Items.Add(item);
}
}
else
{
//加载失败，提示
MessageBox.Show(this, "加载用途列表失败，确保数据库可链接!", "提示",
MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}