ASP-Kalendersteuerung zum Ändern des Hintergrundfarbcodes hinter C#

Question

Wenn Daten in der Datenbanktabelle verfügbar sind, sollte die Kalenderhintergrundfarbe als rote Farbbasis für verfügbare Ereignisdaten in einer SQL-Tabelle geändert werden. Unten ist mein Design-Code.

<asp:Calendar ID="Calendar1" runat="server" OnSelectionChanged="Calendar1_SelectionChanged"> 
</asp:Calendar> 
Selected Date: <asp:Label ID="Label1" runat="server" ></asp:Label> 

<br /> 
<br /> 

    <asp:GridView ID="gv_Regdetails" runat="server" AllowSorting="True" 
       AlternatingRowStyle-CssClass="alt" AutoGenerateColumns="False" CssClass="mGrid" 
       Width="900px" PageSize="50"> 
       <RowStyle HorizontalAlign="Center" /> 
       <AlternatingRowStyle CssClass="alt" /> 
       <Columns> 
        <asp:TemplateField HeaderText="Sno"> 
         <ItemTemplate> 
          <%# Container.DataItemIndex + 1 %> 
         </ItemTemplate> 
         <HeaderStyle HorizontalAlign="Center" Width="30px" /> 
         <ItemStyle CssClass="th" HorizontalAlign="Center" Width="30px" /> 
        </asp:TemplateField> 
        <asp:BoundField DataField="EventName" HeaderText="EventName"> 
         <ItemStyle CssClass="th" HorizontalAlign="Left" Width="30px" /> 
         <HeaderStyle HorizontalAlign="Left" Width="30px" Height="25px" /> 
        </asp:BoundField> 
        <asp:BoundField DataField="Title" HeaderText="Title"> 
         <ItemStyle CssClass="th" HorizontalAlign="Left" Width="30px" /> 
         <HeaderStyle HorizontalAlign="Left" Width="30px" Height="25px" /> 
        </asp:BoundField> 

        <asp:BoundField DataField="Description" HeaderText="Description"> 
         <ItemStyle CssClass="th" HorizontalAlign="Left" Width="30px" /> 
         <HeaderStyle HorizontalAlign="Left" Width="30px" Height="25px" /> 
        </asp:BoundField> 

       </Columns> 
       <EmptyDataTemplate> 
        <center> 
            <asp:Label ID="Label12" runat="server" Text="No Data avaliable for selected dates" 
             ForeColor="Red"></asp:Label></center> 
       </EmptyDataTemplate> 
      </asp:GridView> 

Unten ist mein C# Code und ich schreibe meine Logik in Calendar1_DayRender Methode.

protected void Calendar1_SelectionChanged(object sender, EventArgs e) 
{   
    Label1.Text = Calendar1.SelectedDate.ToShortDateString(); 
    bo.Para1 = Label1.Text; 
    DataTable dt = new DataTable(); 
    dt = bl.Get_detailsbydate(bo); 
    gv_Regdetails.DataSource = dt; 
    gv_Regdetails.DataBind(); 
} 
protected void Calendar1_DayRender(object sender, DayRenderEventArgs e) 
{ 
    DataTable dt = new DataTable(); 
    dt = bl.Get_detailsbydate(bo); 
    string dates = dt.Rows[0]["EventDate"].ToString(); 

// if (e.Day.Date == dates) 
// { 
//   e.Day.IsSelectable = false; 
//   e.Cell.ForeColor = System.Drawing.Color.Red; 
// } 


} 

Answer 1

protected void Calendar1_DayRender(object sender, DayRenderEventArgs e) 
{ 
    DataTable dt = new DataTable(); 
    dt = bl.Get_detailsbydate(bo); 
    string dates = dt.Rows[0]["EventDate"].ToString();// Confirm if you EventDate is in a same format to calendar 

    if (e.Day.Date == dates) 
    { 
     e.Day.IsSelectable = false; 
     e.Cell.BackColor = System.Drawing.Color.Red; 
    } 


}