我已成功檢查數據庫中是否有值。檢查記錄後,讀卡器無法繼續
下面是代碼:
if (!reader.Read())
{
MessageBox.Show(" Can not find user!");
reader.Close();
}
else
{
int count = 0;
while (reader.Read())
{
string user = (string)reader.GetString(0);
string name = (string)reader.GetString(1);
int roll = (int)reader.GetInt32(2);
string phone = (string)reader.GetString(3);
string address = (string)reader.GetString(4);
string birthofdate = (string)reader.GetString(5);
label1.Text = "" + roll;
label2.Text = name;
label3.Text = birthofdate;
label4.Text = "" + phone;
label5.Text = address;
}
}
但問題是,while循環反正跳過。
是否檢查過標籤的可見性? – 2012-07-12 06:35:12
你真的想要演員嗎?'GetString'將返回字符串和'GetInt32'一個int – V4Vendetta 2012-07-12 06:37:10