Generate comma separated Dates between two Dates on Button Click using C# and VB.Net in ASP.Net

Hey nauna,

Please refer below sample.

HTML

<link href="http://ajax.aspnetcdn.com/ajax/jquery.ui/1.9.2/themes/blitzer/jquery-ui.css"
    rel="Stylesheet" type="text/css" />
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://cdn.rawgit.com/dubrox/Multiple-Dates-Picker-for-jQuery-UI/master/jquery-ui.multidatespicker.css" />
<script type="text/javascript" src="https://code.jquery.com/ui/1.12.1/jquery-ui.min.js"></script>
<script type="text/javascript" src="https://cdn.rawgit.com/dubrox/Multiple-Dates-Picker-for-jQuery-UI/master/jquery-ui.multidatespicker.js"></script>
<script type="text/javascript">
    var $j = $.noConflict(true);
</script>
<script type="text/javascript">
    $j(function () {
        $j('[id*=txtFrom]').multiDatesPicker({
            dateFormat: 'dd/M/yy'
        });
        $j('[id*=txtTo]').multiDatesPicker({
            dateFormat: 'dd/M/yy'
        });
    });
</script>
From :
<asp:TextBox ID="txtFrom" runat="server"></asp:TextBox>
<br />
To :
<asp:TextBox runat="server" ID="txtTo"></asp:TextBox>
<asp:Button Text="Submit" runat="server" OnClick="GetDates" />

Code

C#

protected void GetDates(object sender, EventArgs e)
{
    string result = "";
    List<DateTime> listDate = new List<DateTime>();
    DateTime start = DateTime.Parse(txtFrom.Text);
    DateTime end = DateTime.Parse(txtTo.Text);
    for (DateTime dt = start; dt <= end; dt = dt.AddDays(1))
    {
        listDate.Add(dt);
        result += dt.ToString("dd/MMM/yyyy") + ",";
    }
    Response.Write(result.TrimEnd(','));
}

VB.Net

Protected Sub GetDates(ByVal sender As Object, ByVal e As EventArgs)
    Dim result As String = ""
    Dim listDate As List(Of DateTime) = New List(Of DateTime)()
    Dim start As DateTime = DateTime.Parse(txtFrom.Text)
    Dim [end] As DateTime = DateTime.Parse(txtTo.Text)
    Dim dt As DateTime = start

    While dt <= [end]
        listDate.Add(dt)
        result += dt.ToString("dd/MMM/yyyy") & ","
        dt = dt.AddDays(1)
    End While

    Response.Write(result.TrimEnd(","c))
End Sub

Screenshot