Using jQuery validate plugin in Asp .Net to validate dropdownlist

The jQuery validate plugin can be used in HTML page validations. It can be easily integrated to ASP.Net forms validation as described below.

1. In the header (or in the content page if you are using master pages) put references for jQuery and jQery validator plugin.

2.In general it is recommended that you wire form validation in the DOM ready event of the jQuery. But if you are using update panels you should wire up these events in the pageLoad. In this example I am validation a dropdown list with a default value "(not set)".  This is achieved using the jQuery.validator.addMethod  as shown below.

        
              jQuery.validator.addMethod("defaultInvalid", function (value, element) {
                switch (element.value) {
                    case "(not set)":
                        if (element.name == "<%= ddlCountry.UniqueID %>") return false;
                        break;
                    default:
                        return true;
                        break;
                }
            });

3. Next include the controls to be validated in the form validate method. Remember to include the defaultInvalid: true attribute to validate the default value.

 $("#form1").validate({

                rules: {
                    "<%= ddlCountry.UniqueID %>": {
                        required: true,
                        defaultInvalid: true
                    }
                },
                messages: {
                    "<%= ddlCountry.UniqueID %>": "* Required"
                }
            });
4. Finally define the IsValid() that is called on Update click,

 function IsValid() {
            var isValid = $("#form1").valid();

            if (isValid) {
                return true;
            }
            return false;
   }
               

The trick is to call the IsValid function on the OnClientClick event of the Update button.

visual studio 2010/2012/2013 nuget error "The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel"

I recently came across this issue when trying to launch the nuget package manager. It seems this issue is common to all  VS2010,2012 and 2013 versions. Follow these steps to solve the issue.

Go to VS2010/2012/2013  -> Tools -> Library Package Manager -> Package Manager Settings
Choose Package Manager -> Package Sources.
1. Add a new package source as:
Name= NugetSrc
Source= http://packages.nuget.org/v1/FeedService.svc/
2. Move Up the newly added package source to the first position.
3. UnCheck existing "Nuget official package source"
4. Restart VS2010/2012/2013

cheers,
Samitha

Find and replace text in a file in c#

The easiest way to find and replace text in a file is to use the Replace method of string as shown below.

string content= File.ReadAllText("FileName.txt");
text = content.Replace("find text", "replace text");
File.WriteAllText("FileName.txt", text);

You can use the Regex.Replace method for more complex replacements

Cheers,
Samitha