[英]SqlException was Unhandled
我正在嘗試用數據庫在C#中創建登錄表單,我不知道該怎么辦,這是代碼錯誤,說sda.Fill(dt)部分未處理SQLException,這是代碼
SqlConnection con = new SqlConnection(@"Data Source=.\LOUI;Initial Catalog=login_db;User ID=sa;Password=1029384756");
SqlDataAdapter sda = new SqlDataAdapter("Select Count (*) From login_tbl where username = '" + User_txt.Text + "'and password = '" +Pass_txt.Text+ "'",con);
DataTable dt = new DataTable();
sda.Fill(dt);
if (dt.Rows[0][0].ToString() == "1")
{
this.Hide();
adminpanel ap = new adminpanel();
ap.Show();
}
else
{
MessageBox.Show("Check Username or Password");
}
替換sda.Fill(dt);
同
try
{
sda.Fill(dt);
}
catch (SQLException ex)
{
Console.WriteLine(ex.ToString());
}
並編輯您的問題以包括新的輸出。
try
{
SqlConnection con = new SqlConnection(@"Data Source=.\LOUI;InitialCatalog=login_db;User ID=sa;Password=1029384756");//problem is here
SqlDataAdapter sda = new SqlDataAdapter("Select Count (*) From login where name = '" + User_txt.Text + "'and pass = '" + Pass_txt.Text + "'", con);
DataTable dt = new DataTable();
sda.Fill(dt);
if (dt.Rows[0][0].ToString() == "1")
{
this.Hide();
adminpanel ap = new adminpanel();
ap.Show();
}
else
{
MessageBox.Show("Check Username or Password");
}
}
catch (Exception z)
{
MessageBox.Show("Connection error");
}
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