Question

C#关于this.Tag问题，求大神解决！！！！

private void butClose_Click(object sender, EventArgs e)
{
if ((int)(this.Tag) == 1) ------>错误地方
{
DataClass.MyMeans.Login_n = 3;
Application.Exit();
}
else
if ((int)(this.Tag) == 2) ------>错误地方
this.Close();
}

private void butLogin_Click(object sender, EventArgs e)
{
if (textName.Text != "" & textPass.Text != "")
{
SqlDataReader temDR = MyClass.getcom("select * from tb_Login where Name='" + textName.Text.Trim() + "' and Pass='" + textPass.Text.Trim() + "'");
bool ifcom = temDR.Read();
if (ifcom)
{
DataClass.MyMeans.Login_Name = textName.Text.Trim();
DataClass.MyMeans.Login_ID = temDR.GetString(0);
DataClass.MyMeans.My_con.Close();
DataClass.MyMeans.My_con.Dispose();
DataClass.MyMeans.Login_n = (int)(this.Tag); ------>错误地方
this.Close();
}

登陆代码是这样的。问题如图





Answer 1

 private void butClose_Click(object sender, EventArgs e)
        {
            int r=0;
            if (int.TryParse((string)this.Tag,out r)) {
                if (r == 1)  ------>错误地方
            {
                DataClass.MyMeans.Login_n = 3;
                Application.Exit();
            }
            else
                if (r == 2) ------>错误地方
                    this.Close();
            }
        }
        private void butLogin_Click(object sender, EventArgs e)
        {
            if (textName.Text != "" & textPass.Text != "")
            {
                SqlDataReader temDR = MyClass.getcom("select * from tb_Login where Name='" + textName.Text.Trim() + "' and Pass='" + textPass.Text.Trim() + "'");
                bool ifcom = temDR.Read();
                if (ifcom)
                {
                    DataClass.MyMeans.Login_Name = textName.Text.Trim();
                    DataClass.MyMeans.Login_ID = temDR.GetString(0);
                    DataClass.MyMeans.My_con.Close();
                    DataClass.MyMeans.My_con.Dispose();
                    int r=0;
                    if (int.TryParse((string)this.Tag,out r)) 
                            DataClass.MyMeans.Login_n =r;    ------>错误地方
                    this.Close();
                }