public void doTry()
{
db.ConnectionCheck();
string sqlUname = "";
string oracleUname = "";
string usertesting = "select * from nayatable";
db.cmd = new SqlCommand(usertesting, db.DBconnect);
SqlDataReader myReader = db.cmd.ExecuteReader();
if (myReader.Read())
{
sqlUname = myReader["USERNAME"].ToString();
//MessageBox.Show(uname);
textBox1.Text = sqlUname;
}
}
It only gives first row second value but I need all the column in available in database.
There are numerous options here either you can go for DataTable as Ehsan said or you can use List to collect all the data. Something Like this:
public class dbLogin
{
public string userName{get;set;}
}
public void doTry()
{
db.ConnectionCheck();
string sqlUname = "";
string oracleUname = "";
string usertesting = "select * from nayatable";
db.cmd = new SqlCommand(usertesting, db.DBconnect);
SqlDataReader myReader = db.cmd.ExecuteReader();
List<dbLogin> dbData=new List<dbLogin>();
if (myReader.Read())
{
dbLogin _dbLogin=new dbLogin();
_dbLogin.userName = myReader["USERNAME"].ToString();
textBox1.Text = sqlUname;
dbData.Add(_dbLogin);
}
}
If you want to get all the values, you have to loop :
...
// Keep Sql Readable
// Do not fetch unwanted columns - *
string userTesting =
@"select UserName
from NayaTable";
// Wrap IDisposable into using
using (db.cmd = new SqlCommand(userTesting, db.DBconnect)) {
// Wrap IDisposable into using
using(SqlDataReader myReader = db.cmd.ExecuteReader()) {
// we are going to build one string from many records
StringBuilder sb = new StringBuilder();
// Here, we have to loop and aggregate / collect all the records
while (myReader.Read()) {
if (sb.Length > 0)
sb.Append(", "); // delimiter
sb.Append(Convert.ToString(myReader["USERNAME"]));
}
// Here you'll get usernames like "Sam, John, Mary"
textBox1.Text = sb.ToString();
}
}
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