C# load data based on datepicker

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Hi. I want to load data based from sql based on date. There are 2 datepicker(date1 and date2) and I want it to select from only 1 column(start_time). So far, I can already load the data but when I try to use the datepicker it will become wrong. Please help me as I am very new to this.

What I have tried:

private void Button_Click(object sender, RoutedEventArgs e)
       {
           using (SqlConnection sqlCon = new SqlConnection(connectionString))
           {
               sqlCon.Open();
               SqlDataAdapter sqlDa = new SqlDataAdapter ("empselect where Start_time
               BETWEEN @date1 AND @date2", sqlCon);
               DataTable dtbl = new DataTable();
               sqlDa.Fill(dtbl);
               emp.ItemsSource = dtbl.DefaultView;

           }
       }

Posted 29-Oct-19 21:14pm

Member 14638721

Updated 30-Oct-19 2:09am

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OriginalGriff · Answer 1 · 2019-10-29T21:42:00

Solution 1

You need to provide the parameter data, as well as the command string (which looks unlikely to work anyway) via the SqlCommand.Parameters collection.

Posted 29-Oct-19 21:42pm

OriginalGriff

Comments

Member 14638721 30-Oct-19 4:12am

Why unlikely to work? It cannot be done?

MadMyche · Answer 2 · 2019-10-30T02:10:00

As OriginalGriff answered, you will need to add those date-picker values to the query.
Generally I do this by creating the SqlCommand object prior to the SqlDataAdapter definition

C#

SqlCommand sqlCmd = new SqlCommand("SELECT * FROM empselect WHERE Start_time BETWEEN @date1 AND @date2", sqlCon);
sqlCmd.Parameters.AddWithValue("@date1", /* datepicker start date here */);
sqlCmd.Parameters.AddWithValue("@date2", /* datepicker stop  date here */);

SqlDataAdapter sqlDa = new SqlDataAdapter();
sqlDa.SelectCommand = sqlCmd;