我无法将数据从注册表单插入到sqlserver-2008中。我在VS中遇到错误:连接未关闭。连接的当前状态已打开。插入记录到sqlserver db
下面是我的代码:
protected void buttonRegister(object sender, EventArgs e)
{
SqlConnection objCon = new SqlConnection(strCon);
try
{
objCon.ConnectionString = strCon;
objCon.Open();
}
catch (Exception ex)
{
this.lblConnect.Text = "Unable to connect to database.";
}
if (objCon.State == System.Data.ConnectionState.Open)
{
Session["users"] = this.txtUsername.Text;
Session["pwd"] = this.txtPassword.Text;
lblConnect.Text = "Connected";
string sql = @"INSERT INTO user (firstname, middlename, lastname, username, email, password) VALUES ('" + txtFirstname.Text
+ "' , '" + txtMiddlename.Text + "', '" + txtLastname.Text + "', '" + txtUsername.Text + "', '" + txtEmailAddr.Text
+ "', '" + txtPassword.Text + "')";
objCon.Open();
SqlCommand cmd = new SqlCommand(sql, objCon);
cmd.ExecuteNonQuery();
SqlDataReader rd = cmd.ExecuteReader();
objCon.Close();
objCon.Dispose();
}
else
{
lblConnect.Text = "Unable to connect to database.";
objCon.Close();
objCon.Dispose();
}
objCon.Close();
objCon.Dispose();
}
任何想法,为什么它不插入SQL Server的?请帮忙!任何帮助深表感谢。
嗨!如果你想在你的文章中包含源代码,你应该缩进四个空格,所以它将被正确格式化。或者你可以选择所有的代码,然后点击大括号中的按钮:) – NikiC 2011-04-26 15:25:12
考虑使用表格适配器。您的代码按原样进行SQL注入。非常危险! – turtlepick 2011-04-26 15:32:46
@flaviotsf这看起来像copypasta给我。我想他只是想了解数据库连接的工作原理。你绝对正确的重新:SQL注入,但他可能是最好的保持现在简单,恕我直言。 – Matthew 2011-04-26 15:36:36