getting querystring from string

I was having a URL as string
e.g. string videoURL="http://www.youtube.com/watch?v=Rz-Lejndrys";

So now if I wanted to get the value of querstring v. We can get sub-string of videoURL or there is one more method to fetch value of v from above string.

 Uri videoPrevUri = new Uri(videoURL);
 string videoID = HttpUtility.ParseQueryString(videoPrevUri.Query).Get("v");

videoID will return you the value of v

Regular expression for special character in C#

Regex reg = new Regex("[~#%&;*{}\\:<>?/\"|$]+");
 if (reg.IsMatch(TxtBox.Text.Trim()))
{
//Error Msg
}

getting only file name from fileupload control and checking for special character in file name :-JQuery

function ValidateThumbnail() {
//get file name
        var path = $("[id$=fileUploadControl]").val();
        var pos = path.lastIndexOf(path.charAt(path.indexOf(":") + 1));
      
        var f = path.substring(pos + 1);
       //check for special char
        if ((f.indexOf("#", 0) >= 0)
        || (f.indexOf("&", 0) >= 0)
        || (f.indexOf("*", 0) >= 0)
        || (f.indexOf(";", 0) >= 0)
        || (f.indexOf("$", 0) >= 0)
        || (f.indexOf("%", 0) >= 0)
        || (f.indexOf("^", 0) >= 0)
        || (f.indexOf("{", 0) >= 0)
        || (f.indexOf("}", 0) >= 0)
        || (f.indexOf("|", 0) >= 0)
        || (f.indexOf("/", 0) >= 0)
        || (f.indexOf("?", 0) >= 0)
        || (f.indexOf("~", 0) >= 0)
        || (f.indexOf(":", 0) >= 0)
        || (f.indexOf("<", 0) >= 0)
        || (f.indexOf(">", 0) >= 0)
        || (f.indexOf("\"", 0) >= 0)
        ) {
            alert("File: [" + f + "] contains invalid character");
            return false; //will stop button click event here
        }
        return true;
    }

JQuery POP UP during page load /Post back

give call to below fuction on client click

function ShowLoading(e) {
        var div = document.createElement('div');
        var img = document.createElement('img');
        img.src = '/_layouts/Portal/Images/ajax-loader-1.gif';
        div.innerHTML = "Please wait...<br />";
        div.style.cssText = 'position: fixed; top: 30%; left: 40%; z-index: 5000; width: 222px; text-align: center; background: #fff; border: 1px solid #000';
        div.appendChild(img);
        document.body.appendChild(div);
       
    }

TaxonomyWebTaggingControl in UpdatePanel with AJAX

When asyncronuous postback will happen it will not load the TaxonomyWebTaggingControl because DOM gets null.
Use below methode to load TaxonomyWebTaggingControl  after asyn postback.

private string GetReloadJavaScript(TaxonomyWebTaggingControl taxonomyControl)
        {
            String script = String.Empty;
          
            String containerId = SPEncode.ScriptEncode(taxonomyControl.Controls[1].ClientID);
            Type type_TaxonomyWebTaggingControl = typeof(TaxonomyWebTaggingControl);
            MethodInfo mi_getOnloadJavascript = type_TaxonomyWebTaggingControl.GetMethod("getOnloadJavascript", BindingFlags.NonPublic | BindingFlags.Instance);
            String fullScript = (String)mi_getOnloadJavascript.Invoke(taxonomyControl, null);
            int pos = fullScript.IndexOf(String.Format("function {0}_load()", containerId));
            if (pos > -1)
            {
                StringBuilder builder = new StringBuilder();
                builder.Append("var myPrm_" + taxonomyControl.ID + " = Sys.WebForms.PageRequestManager.getInstance();");
                builder.Append("myPrm_" + taxonomyControl.ID + ".add_endRequest(EndRequest_" + taxonomyControl.ID + ");");
                builder.Append("function EndRequest_" + taxonomyControl.ID + "(sender, args)");
                builder.Append("{");
                // we get te first part of the script needed to initialization
                // we start from pos 1, because we don't need the leading '{'
                builder.Append(fullScript.Substring(1, pos - 1));
                builder.Append("Microsoft.SharePoint.Taxonomy.ScriptForWebTaggingUI.onLoad('");
                builder.Append(containerId);
                builder.Append("');");
                builder.Append("}}");
                script = builder.ToString();
            }
            return script;
        }



How to call above methode

String key1 = "TaxonomyWebTaggingAjaxIncludeOnce1";
                if (!this.Page.ClientScript.IsClientScriptBlockRegistered(base.GetType(), key1))
                {
                    this.Page.ClientScript.RegisterClientScriptBlock(base.GetType(), key1, GetReloadJavaScript(taxanomyProjectCategory_taxonomyControl), true);

                }

give multiple call to methode for all taxonomy controls on page.

Remove user from Sharepoint group using powershell

PS C:\Users\ADM> $spWeb = Get-SPWeb http://abc/
PS C:\Users\ADM> $group=$spWeb.SiteGroups["Legal Approvers"]
PS C:\Users\ADM> $group.Users
PS C:\Users\ADM> $theuser = $spWeb.AllUsers.Item("SHAREPOINT\system")
PS C:\Users\ADM> $group.RemoveUser($theuser)
PS C:\Users\ADM> $group.Update()
PS C:\Users\ADM> $group.Users

Failed to create receiver object from assembly sharepoint 2010 error while deploying WSP

The problem was because the timer service cached the previous dlls. You have to restart timer service on all servers in the farm before starting any new deployment.

Sharepoint 2010
--------------------------------
 net stop SPTimerV4

  net start SPTimerV4


Sharepoint 2007
----------------------------------
 net stop SPTimerV3
  
 net start SPTimerV3