Useful blog spot link

1. http://www.aspdotnet-suresh.com/2011/06/introduction-to-wcf-wcf-tutorial-wcf.html
2. http://dotnetguts.blogspot.in/2007/09/assemblies-concept-in-net.html
3. http://aspalliance.com/802_Understanding_Assemblies - Assembilies
4. http://revenmerchantservices.com/ - dotnet, android, etc.,
5. projects- http://www.enggroom.com/Project.aspx
6. http://go4answers.webhost4life.com/Default.aspx?CategoryName=microsoft%20technologies

7. oops concept
http://dotnetstories.wordpress.com/2009/06/21/object-oriented-programming-concepts-with-c3-0/

Update Panel and Callback Panel

AJAX Page - UpdatePanel

CallbackPanel has 2 elements:

• content element can contain contain html, js, css and other server controls - like Obout Calendar, Obout EasyMenu, ASP.NET controls (ASP Textbox, ASP DropDownList, etc.).
• loading element is optional and it can include the html to display while the panel is loading.
  If ommited, a default "Loading..." text is shown and all styles from content element are applied to theloading element.
  It is visible only when the callback panel is updated using client-side UpdatePanel method.

Both content and loading elements can contain style definitions. 

<oajax:CallbackPanel runat="server" ID="callbackPanel1">

<content style="border:1px solid gray;width:400px;height:200px">

some content

</content>

<loading style="border:1px solid red;width:400px;height:200px">

Loading...please wait

</loading>

</oajax:CallbackPanel>

---------------------------------------------
It is very useful to load dynamic scripts, dynamic stylesheets, dynamic controls, etc. 

The update of the panel is done without reloading the page. 

Client-side update 
ob_post.UpdatePanel("callbackPanel1"); 
ob_post.UpdatePanelInContainer("callbackPanel1", "container"); 
ob_post.UpdatePanelFromPage("callbackPanel1", "container", "callbackPanels.aspx"); 
ob_post.UpdateAllPanels(); 

Server-side update 
UpdatePanel("callbackPanel1"); 
UpdatePanel("callbackPanel1", "container"); 
UpdateAllPanels(); 
--------------------------------------------------------------------
Update Callback Panel specified by id. 

For example, you can use the next lines: 

Client-side update

        ob_post.UpdatePanel("callbackPanel1"); 
  

Server-side update

        UpdatePanel("callbackPanel1"); 
  

Example 1 - Callback Panel contain html, css and ASP DataList control.

<%@ Register TagPrefix="oajax" Namespace="OboutInc" Assembly="obout_AJAXPage" %>

        <oajax:CallbackPanel runat="server" ID="callbackPanel1">
            <content style="border: gray 1px solid;">
                <style>
                .divItem
                {
                    border-bottom:1px solid gray;
                    font-size:9px;
                    width:130px;
                    padding-top:4px;
                    padding-bottom:4px;
                }
                </style>
                <b>My List</b>
                <asp:DataList id="dataList1" runat="server">
                    <ItemTemplate>
                        <div class="divItem">
                            some item content
                        </div>
                    </ItemTemplate>
                </asp:DataList>
            <content>
            <loading style="border: gray 1px solid;">
                Loading...please wait
            </loading>
        </oajax:CallbackPanel>
    

See also live UpdatePanel Example. 


Example 2 - Callback Panel contain ASP Literal control.

<%@ Register TagPrefix="oajax" Namespace="OboutInc" Assembly="obout_AJAXPage" %>

        <oajax:CallbackPanel runat="server" ID="callbackPanel1">
            <content style="border: gray 1px solid;">
                <asp:Literal id="serverTime" Runat="server"></asp:Literal>
            </content>
            <loading style="border: gray 1px solid;">
                Loading...please wait
            </loading>
        </oajax:CallbackPanel>
   

Example 3 - multiple Callback panel.

Client-side update

        ob_post.UpdateAllPanels(); 
  

Server-side update

        UpdateAllPanels(); 

public void UpdateAllPanels()

{ 

        UpdatePanel("CallBackPanel1");
        UpdatePanel("CallBackPanel2");

}

<%@ Register TagPrefix="oajax" Namespace="OboutInc" Assembly="obout_AJAXPage" %>
        <!-- CallbackPanel1-->
        <oajax:CallbackPanel runat="server" ID="callbackPanel1">
            <content style="border: gray 1px solid;">
                <span style="color:red">
                    <asp:Literal id="serverMillisecond" Runat="server"></asp:Literal>
                </span>
            </content>
        </oajax:CallbackPanel>

        <!-- CallbackPanel2-->
        <oajax:CallbackPanel runat="server" ID="callbackpanel2">
            <content style="border: gray 1px solid;">
                <asp:Literal id="serverTime" Runat="server"></asp:Literal>
            </content>
        </oajax:CallbackPanel>

Example 4- Callback Panel inside Update panel.

<%@ Register TagPrefix="oajax" Namespace="OboutInc" Assembly="obout_AJAXPage" %>

 <tr>

    <td>

         <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">

         <ContentTemplate>

           <oajax:CallbackPanel ID="CallBackPanel1" runat="server">

             <Content>

                 <table border="0" width="100%">

                  <tr>

                     <td>

 age ID="imgIndication" runat="server" Height="15px" ImageUrl="~/images/icon-delete.gif" Width="15px" />

                     </td>

                  </tr>

                </table>

              </Content>

      </oajax:CallbackPanel>

    </ContentTemplate>

   </asp:UpdatePanel>

  </td>

 </tr>

Server-Side Update

    UpdatePanel("callbackPanel1"); 

Alert Message from CodeBehind

1. How to Redirect a page after clicking OK of javascript alert box.

Way 1:

C# code behind:

string strScript = "<script>";
strScript += "alert('Type your message here');";
strScript += "window.location='TestPage.aspx';";
strScript += "</script>";
this.ClientScript.RegisterStartupScript(this.GetType(), "Startup", strScript);

Way 2:

 Response.Write("<script>alert('Successfully changed')</script>");

 Response.Write("<script>window.location.href='Default.aspx';</script>");

Way 3:

ScriptManager.RegisterStartupScript(page, page.GetType(), "err_msg", "alert('" + error + "'); window.location='newpage.aspx';", true); 2. Alert message from Codebehind: Way 1:    ScriptManager.RegisterStartupScript(this, this.GetType(), "script", "alert('Success');", true); Way 2:   Page.ClientScript.RegisterStartupScript(this.GetType(), "key", "alert('No Records Available');", true); Way 3: If we have used Update Panel, Use following code.  ScriptManager.RegisterStartupScript(this.Page, typeof(UpdatePanel), "key", "alert('Success');", true); 2. Confirmation Message: <script type="text/javascript">         function Confirm(id, des) {             // debugger;             try {                 if (document.getElementById(id).value != "") {                     var r = confirm("This is new Code.Do you want add this code?");                     if (r == true) {                         document.getElementById(des).value = "";                         document.getElementById(des).focus();                         return true;                     }                     else {                         document.getElementById(id).value = "";                         document.getElementById(id).focus();                         return true;                     }                     return false;                 }             }             catch (e) {             }         }           </script>

Java Script Function

1. how to display block or none for control in javascript

<tr id="trBrowse" runat="server" style="display: none;">
      <td></td>
</tr>

trBrowse.Style.Add("display", "block");

How to get open folders list using C#?

To Open a particular folder in Explorer, just:

System.Diagnostics.Process.Start(@"explorer.exe", @"C:\Windows");

In fact, as Explorer is the asscoaited handler for folder, that could be written as:

System.Diagnostics.Process.Start(@"C:\Windows");

or

 string path="D:\\Test";

 System.Diagnostics.Process.Start("explorer.exe", path);

CheckForDuplicates confirmation message

protected void SaveButton_Click(object sender, EventArgs e)
{
    try
    {
        if (CheckForDuplicates())
        {
            //proceed normally
        }
    }
}

private bool CheckForDuplicates()
{
    //check database

            if (/*there are duplicates*/)
            {
                string message = "A duplicate name exists. Would you like to continue?";
                string scriptString = "<script language='javascript' 
                    type='text/javascript'>" + "return confirm('" + message + "');</script>";

                ScriptManager.RegisterStartupScript(this, this.GetType(), 
                    "script", scriptString, false);

                //here i would like to return their confirmation
            }
        }
    }
    return true;
}

Find Extented Ascii Value using javascript

<script type="text/javascript">
function CheckAll() {
var Titleid = document.getElementById('ID');
            var tit = Titleid.value;
            var T = [];
            for (var i = 0, j = Titleid.value.length; j--; i++) {
                T[i] = tit.charCodeAt(i);
                if (T[i] > 128) {
                    alert("Ascii found: " + String.fromCharCode(T[i]));
                    document.getElementById('ID').focus();
                    return false;
                }
            }

  return true;
        }
 </script>