Question

I am designing a web page, i want to get last entry from the column (“call_id) from the table “tbl_CALL” and store in the variable(“lastcallId”).
can anyone help me for writing he code in c#.
Thanks in advance

Answer 1

Try this:
on your web.config:

<connectionStrings>
    <add name="OracleDBConnString" connectionString="Provider=MSDAORA;Data Source=[database];User ID=[userID];Password=[yourPassword];"
   providerName="System.Data.OleDB" />
 </connectionStrings>

in your C#:

private OleDbConnection conn = new OleDbConnection();
private string _strCon = ConfigurationManager.ConnectionStrings["OracleDBConnString"].ConnectionString;
private OleDbTransaction _trans = null;
DataTable dt = new DataTable();
DataSet ds = new DataSet();
OleDbDataAdapter da = new OleDbDataAdapter();

conn.Open();

strSelectQuery = "SELECT last(call_no) FROM tbl_IThelpdesk"; // here you have to put your query


da.SelectCommand = new OleDbCommand(strSelectQuery, conn);
da.Fill(ds);
dt = ds.Tables[0];

conn.Close();

Now, the content of your SQL query is now at dt. I hope this helps.