i want to retrieve data of a particular row and display it in a table

Question

1.00/5 (1 vote)

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my code is as follow:

C#

private DataTable GetData()
    {
        DataTable dt = new DataTable();
        string connection_string = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\HILProject\project4\App_Data\adminlog.mdb";
        using (OleDbConnection cn = new OleDbConnection(connection_string))

        using (OleDbDataAdapter adp = new OleDbDataAdapter("select Name,Email_Id, Mob_No, Dob From UserReg ", cn))
        using (OleDbCommand command = new OleDbCommand()) 
        {
            cn.Open();
          adp.Fill(dt);
        }
        return dt;
    }
}

i want to retrieve data by using "where username = Textbox1.text"
username is a column name of table userreg
how to write where clause

Posted 1-Jun-14 4:57am

Ashwini Thakare

Updated 1-Jun-14 5:05am

DamithSL

v2

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2 solutions

Solution 1

Learn to do it from : Parameter-Queries-in-ASP.NET-with-MS-Access[^]

Posted 1-Jun-14 5:01am

Peter Leow

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DamithSL · Accepted Answer · 2014-06-01T05:04:00

C#

string queryString ="select Name,Email_Id, Mob_No, Dob From UserReg where username =?";
using (OleDbConnection connection =
           new OleDbConnection(connectionString))
{
    OleDbDataAdapter adapter =
        new OleDbDataAdapter(queryString, connection);

    // Set the parameters.
    adapter.SelectCommand.Parameters.AddWithValue("@p1", Textbox1.Text);

    // Open the connection and fill the DataSet.
    try
    {
        connection.Open();
        adapter.Fill(dt);
    }
    catch (Exception ex)
    {
        //Console.WriteLine(ex.Message);
    }
    // The connection is automatically closed when the
    // code exits the using block.
}
return dt;

Reference:OleDbParameter Class[^]