Displaying Online users using Memebership with Linq

Hi

try this example to display Online users using Memebership with Linq :-

var online = from MembershipUser u in Membership.GetAllUsers()
                  where u.IsOnline == true
                  select u;
GridView1.DataSource = online;
GridView1.DataBind();

Hope this helps

Good Luck

Printing DIV Contents using Print Preview

Hi

try this example to Print DIV Contents using Print Preview

<form id="Form1" method="post" runat="server">
 <div id="Div1">
  Printable content
 </div>
 <input type="button" value="Print" onclick="JavaScript:printPartOfPage('Div1');">

<script type="text/javascript">
<!--
function printPartOfPage(elementId)
{
 var printContent = document.getElementById(elementId);
 var windowUrl = 'about:blank';
 var uniqueName = new Date();
 var windowName = 'Print' + uniqueName.getTime();
 var printWindow = window.open(windowUrl, windowName, 'left=50000,top=50000,width=0,height=0');

 printWindow.document.write(printContent.innerHTML);
 printWindow.document.close();
 printWindow.focus();
 printWindow.print();
 printWindow.close();
}
// -->
</script>

</form>

//—— another way

<form id="Form1" method="post" runat="server">
 <div id="Div1">
  Printable content
 </div>
 <input type="button" value="Print" onclick="JavaScript:printPreviewDiv('Div1');">

 <script type="text/javascript">
 <!--
 function printPreviewDiv(elementId)
 {
  var printContent = document.getElementById(elementId);
  var windowUrl = 'about:blank';
  var uniqueName = new Date();
  var windowName = 'Print' + uniqueName.getTime();
  var printWindow = window.open(windowUrl, windowName, 'left=50000,top=50000,width=0,height=0');
  var printPreviewObject = '<object id="printPreviewElement" width="0" height="0" classid="CLSID:8856F961-340A-11D0-A96B-00C04FD705A2"></object>';

  printWindow.document.write(printContent.innerHTML);
  printWindow.document.write(printPreviewObject);
  printWindow.document.write('<script language=JavaScript>');
  printWindow.document.write('printPreviewElement.ExecWB(7, 2);');
  printWindow.document.write('printPreviewElement.outerHTML = "";');
  printWindow.document.write('</script>');
  printWindow.document.close();
  printWindow.focus();
  printWindow.close();
 }
 // -->
 </script>
</form>

 Hope this helps

Good Luck

Alphabetic Paging with Gridview

Hi

try this example :-

<asp:linkbutton id="btnAll" runat="server" text="ALL" onclick="btnAll_Click" />
 <asp:repeater id="rptLetters" runat="server" datasourceid="sdsLetters">
  <headertemplate>
    |
  </headertemplate>
  <itemtemplate>
   <asp:linkbutton id="btnLetter" runat="server" onclick="btnLetter_Click" text='<%#Eval("Letter")%>' />
  </itemtemplate>
  <separatortemplate>
    |
  </separatortemplate>
 </asp:repeater>
 <asp:sqldatasource id="sdsLetters" runat="server" connectionstring="<%$ ConnectionStrings:NorthwindConnectionString %>"
  selectcommand="SELECT DISTINCT LEFT(ProductName, 1) AS [Letter] FROM [Products]">
 </asp:sqldatasource>
 <asp:gridview id="gvProducts" runat="server" datakeynames="ProductID" datasourceid="sdsProducts"
  style="margin-top: 12px;">
 </asp:gridview>
 <asp:sqldatasource id="sdsProducts" runat="server" connectionstring="<%$ ConnectionStrings:NorthwindConnectionString %>"
  selectcommand="SELECT ProductID, ProductName FROM [Products] ORDER BY [ProductName]">
 </asp:sqldatasource>

and in code behind :-

protected void btnAll_Click(object sender, EventArgs e)
 {
  gvProducts.DataBind();
 }

 protected void btnLetter_Click(object sender, EventArgs e)
 {
  LinkButton btnLetter = sender as LinkButton;
  if (btnLetter == null) { return; }
  sdsProducts.SelectCommand = String.Format(
   "SELECT ProductID, ProductName FROM [Products] WHERE ([ProductName] LIKE '{0}%') ORDER BY [ProductName]",
   btnLetter.Text);
 }

Hope this helps

Good Luck

Disable Edit and Insert and New Buttons in DetailsView according to Roles

Hi

try this example :-

<asp:TemplateField ShowHeader="False">
    <ItemTemplate>
         <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" Visible='<%# GetShowEditButton() %>'
                             CommandName="Edit" Text="Edit"></asp:LinkButton>
         &nbsp;<asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False" Visible='<%# GetShowInsertButton() %>'
                             CommandName="New" Text="New"></asp:LinkButton>
         &nbsp;<asp:LinkButton ID="LinkButton3" runat="server" CausesValidation="False"
                             CommandName="Delete" Text="Delete" Visible='<%# GetShowDeleteButton() %>'></asp:LinkButton>
    </ItemTemplate>
</asp:TemplateField>

in your codebehind, you have the following:

   

 protected bool GetShowEditButton()
    {
        return Roles.IsUserInRole("Admin");
    }
    protected bool GetShowInsertButton()
    {
        return Roles.IsUserInRole("Admin");
    }
    protected bool GetShowDeleteButton()
    {
        return Roles.IsUserInRole("Admin");
    }

Hope this helps

Good Luck

Check UserName Availability with JQuery using Memebership

Hi

try this example to Check UserName Availability with JQuery using Memebership

First You’ll need to download jquery.js from http://docs.jquery.com/Downloading_jQuery.

The current version is 1.2.6.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
    <script src="scripts/jquery-1.2.6.js" type="text/javascript"></script>
<script type = "text/javascript">
function ShowAvailability() {
    $.ajax({
        type: "POST",
        url: "Default.aspx/CheckUserName",
        data: '{userName: "' + $("#<%=txtUserName.ClientID%>")[0].value + '" }',
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: OnSuccess,
        failure: function(response) {
            alert(response);
        }
    });
}
function OnSuccess(response) {
    var mesg = $("#mesg")[0];

    switch (response) {
        case "true":
            mesg.style.color = "green";
            mesg.innerHTML = "Available";
            break;
        case "false":
            mesg.style.color = "red";
            mesg.innerHTML = "Not Available";
            break;
        case "error":
            mesg.style.color = "red";
            mesg.innerHTML = "Error occured";
            break;                    
    }
}
function OnChange(txt) {
   $("#mesg")[0].innerHTML = "";
}
</script>
</head>
<body>
    <form id="form1" runat="server">
    <asp:ScriptManager ID="ScriptManager1" runat="server" />
        <div>
         UserName :
    <asp:TextBox ID="txtUserName" runat="server"
        onkeyup = "OnChange(this)"></asp:TextBox>
    <input id="btnCheck" type="button" value="Show Availability"
        onclick = "ShowAvailability()" />
    <br />
    <span id = "mesg"></span>
        </div>
    </form>
</body>
</html>

and in code behind :-

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page
{
    [System.Web.Services.WebMethod]
    public static string CheckUserName(string userName)
    {
        string returnValue = string.Empty;
        try
        {
            if (Membership.GetUser(userName) != null)
            {
                returnValue = "false";
            }
            else
            {
                returnValue = "true";
            }
        }
        catch
        {
            returnValue = "error";
        }
        return returnValue;
    }

    protected void Page_Load(object sender, EventArgs e)
    {

    }
}

Hope this helps

Good Luck

Show Popup Calender in DIV

Hi

try this example to show Popup calender in DIV using Javascript

<div id="dateField" style="display:none;">
  <asp:Calendar id="calDate"
  OnSelectionChanged="calDate_SelectionChanged"
  Runat="server" />
</div>

<asp:TextBox id="txtDate" Runat="server" />
<img src="cal.png" onclick="popupCalendar()" />

<script type="text/javascript">
  function popupCalendar()
  {
    var dateField = document.getElementById('dateField');

    // toggle the div
    if (dateField.style.display == 'none')
        dateField.style.display = 'block';
    else
        dateField.style.display = 'none';
  }
</script>

in code behind ;-

protected void calDate_SelectionChanged(object sender, EventArgs e)
{
  txtDate.Text = calDate.SelectedDate.ToString("d");
}

Hope this helps

Good Luck