Grab DateTime variable from CodeBehind to javascript in ASPX

Question

I currently have a variable called ClassStartDate , so this variable is a DateTime . I want to grab this value and pass it to jquery datepicker to set min date. Is there a way to do it? I tried but I can't.

Here's what I've tried

ASPX.CS

public DateTime courseStartDate;

foreach (DataRow row in retrieveBAL.retrieveBatchByProjCode(ddlProjCode.SelectedValue).Tables[0].Rows)
{
       courseStartDate = Convert.ToDateTime(row["courseStartDate"]);
}

ASPX

$('#<%= tbStartDate.ClientID %>').datepicker({
                    dateFormat: 'dd-MM-yy',
                    changeMonth: true,
                    minDate: '<%= courseStartDate %>'
});

Answer 1

$('#<%= tbStartDate.ClientID %>').datepicker({
                        dateFormat: 'dd-MM-yy',
                        changeMonth: true,
                        minDate: '<%= courseStartDate.ToString("dd-MM-yy") %>'
    });