C# Log in form & ADO.net

Question

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please ,
i want right code to make a login form system that open another form in c#2010
(for examble if i have table USERS this table include column( ID,username ,Password ,Active)in db and form login contain 2 textbox for user & pass , combobox1 for type of User and Button1 for login
[ i want connect database and on form when i type the user and type user & password if this correct system go to open another form >
{all of this through check in database}

i need help

Posted 27-Sep-11 17:56pm

Haanaza

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Comments

Prerak Patel 28-Sep-11 0:03am

No efforts! Did you even google?

Haanaza 28-Sep-11 0:14am

thanks , but i don't under stand this["UserName='" + txtUserName.Text + "' and Password='" + txtPassword.Text + "'";] & what you mean "yourredirectedpage.aspx"

Haanaza 28-Sep-11 0:18am

i have for examble Users (admin ,student ,teacher) i want log in form and direct jump to another form , u understand me ,
please help

Haanaza 28-Sep-11 0:23am

i want to say too ,another form Specific to each type of user

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hitech_s · Accepted Answer · 2011-09-27T18:06:00

SqlConnection sqlcon = new SqlConnection("your connection string");
string wherstring = "UserName='" + usernametexbox.Text + "' and Password='" + passwordtextbox.Text + "'";
string strQuery="SELECT type FROM USERS "+wherstring ;
SqlCommand sqlcmd = new SqlCommand(strQuery, sqlcon);
if (sqlcon.State == ConnectionState.Open)
sqlcon.Close();
sqlcon.Open();
object obj = sqlcmd.ExecuteScalar();
sqlcon.Close();
if(obj!=null)
{
string type=convert.toint32(obj);
if(type=="admin")
{
Response.Redirect("adminpage.aspx", false);
}
else if(type=="student")
{
Response.Redirect("studentpage.aspx", false);
}
else if(type=="teacher")
{
Response.Redirect("teacherpage.aspx", false);
} 


}
else
{
//user doesnot exist
}