i cant start page to perform

this is my code:

1myconnection =new SqlConnection(kiemtraloi,chuoiketnoi);2mycommand.Parameters.Add(new SqlParameter("@.mancc",SqlDbType.VarChar,10));3mycommand.Parameters["@.mancc"].Value = TextBox1.Text;4myconnection.Open();5myreader = mycommand.ExecuteReader();6if(myreader.HasRows)

And when I click to start button, a error appear:

NO overload for method 'sqlconnection' takes '2' arguments

I don't know what i must do :(, please help me

thx

Is that all you have or do you have more code? Where is the SQL statement? and the command object?|||

string chuoiketnoi = System.Configuration.ConfigurationSettings.AppSettings["myconn"];

System.Data.SqlClient.SqlConnection myconnection;

System.Data.SqlClient.SqlCommand mycommand;

System.Data.SqlClient.SqlDataAdapter myadapter;

System.Data.SqlClient.SqlDataReader myreader;

System.Data.DataSet mydataset;

// khai bao chuoi cho maytinh

string selectquery = "Select * from maytinh";

string insertquery="Insert into maytinh(mamay) values(@.mamay)";

string updatequery="Update maytinh set mamay=@.mamoi where mamay=@.mamay";

string deletequery = "Delete from maytinh where(mamay=@.mamay)";

// khai bao chuoi cho nhacungcap

string selectnhacungcap="Select * from nhacungcap";

string insertnhacungcap="Insert into nhacungcap(mancc,tenncc,diachi,dienthoai) values(@.mancc,@.tenncc,@.diachi,@.dienthoai)";

string updatenhacungcap="Update nhacungcap set mancc=@.manccmoi,tenncc=@.tennccmoi,diachi=@.diachimoi,dienthoai=@.dienthoaimoi where mancc=@.mancc";

string deletenhacungcap="Delete from nhacungcap where(mancc=@.mancc)";

string kiemtraloi = "Select * from nhacungcap where mancc=@.mancc";

|||

That's because the constructor of SqlConnection class only takes 0 or 1 argument, but you pass 2 arguments to it:

myconnection =new SqlConnection(kiemtraloi,chuoiketnoi);

Why did you pass 2 strings to the constructor?

|||

I think he wants:

myconnection=new SqlConnection(chuoiketnoi);

mycommand=new SqlCommand(kiemtraloi,myconnection);

sql