.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

string to boolean

Posted By:      Posted Date: September 27, 2010    Points: 0   Category :ASP.Net

It is possible to convert string to boolean?

If it is plz give me example


View Complete Post

More Related Resource Links

string boolean and xml


xml resolves boolean types as 1 , 0 or a stirng True Flase .

attempting to convert back from a String containing an xml boolean value will result in invalidOperationException becouse the converter only understancd "True/False" when converting to bool from string , and does not undarstand 1,0.


Is there an effificent way to convert a string to boolean type without resorting to a bunch of ugly tryparse blocks ?

Thanks , Alex

How to Encrypt Query String Parameters in ASP.NET

Encrypt Query String Parameters in ASP.NET.u can send secure data one page another page u can also use query string to encrypt

Connestion string create any database server

This links important to how to create connection string to any data base sever.

SQL Connection String

We can learn or know how can we connect the database from our .net. This will help for freshers or .NET beginners!

Built-in Functions - String Functions

String functions let you extract various portions of character strings, change the case of strings, concatenate and reverse strings and perform many other types of manipulations. All built-in string functions are deterministic with the exception of CHARINDEX and PATINDEX

abstract away the source of the connection string using a class with a static property.

ASP.NET provides a configuration system we can use to keep our applications flexible at runtime. In this article we will examine some tips and best practices for using the configuration system for the best results.

The element of a web.config file is a place to store connection strings, server names, file paths, and other miscellaneous settings needed by an application to perform work. The items inside appSettings are items that need to be configurable depending upon the environment, for instance, any database connection strings will change as you move your application from a testing and staging server into production.

Let's abstract away the source of the connection string using a class with a static property.

highlight string


i am looking for a function that takes two string parameters 

str1 = "hello how are you today mr john"

str2 = "how today"

and in return it shoud highlight the words "how" and "today".

Any ides? I prefer if its possible using reg expression...Thanks

Could some one tell me whats the Problem with this String Manipulation ??? C#.net



I store some values from code behind to a label which is Hidden !

<asp:Label ID="lbl_Hidden" runat="server" Visible = "false"></asp:Label>

and at the page load event i retrieve the value of the label & assign it to a string !

stringvalue = lbl_Hidden.Text;

Now i dont know why this manipulation does'nt work !

I've a character 'A' in the string and i'm unable to replace it with a space !

stringvalue.Replace(A, " ");

Wot do u think abt it ????

extract picture data from a string


dears,advance thanks.can anybdy help to solve my problem which is describing below.

Example- %%D1,100,0,0004[data...][0d0a]

Head - %%D1
Amount of data package -100
The data package No. - 0
Data Length -1024 (0004 (low bit in front, high bit in back) 0004= 0x0400=1024;)

data- Original Picture data -1024(maximum)
Tail -0x0d0a
Data in hex

from the above example i want to extract picture data and need to store in to the sql table.sql table columname is image and datatype is also image.after that i wanted to display this image column to an aspx page.

expecting help asap.

connection string question from a newbie


when publishing  in the webmatrix dialogue it asks for "destination connection string" for my "database.mdf"

I was not sure what it was so I pasted this from my web.config file :

Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\database.mdf;Integrated Security=True;User Instance=True

it all published ok, but wont run, so I guess it has somthing to do with this connection string or some kind of configuration issue.

My question is this, What should go in the field for "Destination connection string"

WebMatrix conversion failed when converting from a character string to uniqueidentifier?


I am trying to retrieve xml from a small function in my .cshtml page. Its throwing me an error. This however, runs fine in a console/form environment.

It takes 3 parameters and 1 exception.

myDll.GetXML(year, username, uniqueidentifier, out ex);

When I run this page I get the error, "Conversion failed when converting from a character string to uniqueidentifier."

Or a stack of.

System.Data.SqlClient.SqlException (0x80131904): Conversion failed when converting from a character string to uniqueidentifier.

   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)

   at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)

   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()

   at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)

   at System.Data.SqlClient.SqlDataReader.ConsumeMetaData()

   at System.Data.SqlClient.SqlDataReader.get_MetaData()

   at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)

   at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBeha

Membership Provider Conn String


Hello. I've bee successfully using the Asp.Net Membership Provider in my VB.Net 3.5/SQL 2005 web app for a year now (Site A). However, I've added 2 new sites (B and C) (both with their own DB) and now I see a problem. It looks like users that get created for sites B and C also get created in site A. Roles that I create for B and C only get created in A. I think it is a conn string problem.

When I created A, I adde the conn string to my machine.config (not sure why I did this or if it is even needed)...


         <add name="LocalSqlServer" connectionString="Data Source=VS689\SQLEXPRESS;Initial Catalog=SiteA;USER ID=sa;PASSWORD=123456"/>


                <add name="AspNetSqlMembershipProvider" type="System.Web.Security.SqlMembershipProvider, System.Web, Version=, Culture=neutral, PublicKeyToken=blahblah" connectionStringName="LocalSqlS

Search for a string in my datasource dynamically


I am displaying an Rssfeed on my page by using XmlDataSource and Datalist controls.

I want the user to be able to limit the information that is returned to my datalist.  To do this I have a textbox on the form that allows the user to enter their search criteria.

I need to be able to dynamically create a query string utilizing the information that the user entered in the textbox.  I am also using a drop down list and allowing the user to select whether they want to search in the title, description, or all parts of the xml file.

I am having trouble figuring out how to reference the data contained in my textbox in my query string.  Where the query string says 'asp', I want to replace 'asp' with the content from my sSearch variable.  Can anyone tell me how to reference my variable in the query string???

string sSearch = txtSearch.Text;
        string SQuery = "";

        if (DropDownList2.SelectedIndex == 0)
            SQuery = "[contains(title), 'asp')]";

Problem Cleaning Illegal Characters out of an XML String



I'm trying to strip illegal characters out of an XML string before I send it off to a public web service.  The xml will look something like this:

<field name="first_name">George</field>
<field name="last_name">Harrison</field>
<field name="notes">This is a note.  Any character could appear here</field>

I need to pull out any ampercand (&) charachters in the any of the fields, as well as any < or > characters, which would make the XML unreadable.

I've tried it like this:

Private Shared Function cleanQuery(ByVal queryNode As String) As String 
    Dim root As XElement = XElement.Parse(queryNode) 
    For Each x As XElement In root.Elements 
        x.Value = x.Value.Replace("&", "&").Replace("<", "<").Replace(">", ">") 
    Return root.ToString() 
End Function


That doesn't work so well.  I get the error stating:

     There are multiple root elements. Line 1, position 15.

I tried wrapping the XML in a single root element, like this:

Private Shared Function cleanQuery2(ByVal q

How to send an email with information in query string


First I will say I googled (Binged to make Bill happy) for this but could not find anything, perhaps I am not stating what I need correctly;

I have a website that a customer creates orders (for a printing company) and after the order, I would like to email the customer a link to view the status of their order;

I need to send the CustomerID in the link so on the returning page if a CustomerID is detected in the querystring, I "auto login" the client and open the "Dashboard" for the order page for that customer.

Can anyone point me in the right direction as to how to send the link and how to parse the querystring to get the values from the link;

Thank you if you can point me in the right direction.

Modifying connection String in Web config using Install Wizard



Im trying to create a Web Deployment Project, the built in setup and deployment is very good in Visual Studio, i need to able to add an additional step in the setup to change the connection string in the Web config file. Ive seen a lot of articles on how to do this and in particular this http://weblogs.asp.net/scottgu/archive/2007/06/15/tip-trick-creating-packaged-asp-net-setup-programs-with-vs-2005.aspx#7162670 I am however stuck on the final part of this tutorial, im using the code Scott provided but have two errors,  heres part of my code where the errors are

using System;
using System.Configuration;
using System.Configuration.Install;
using System.ComponentModel;
using System.Diagnostics;
using System.IO;
using System.DirectoryServices;

 void ConfigureDatabase(string targetSite, string targetVDir, string connectionString)
            // Retrieve "Friendly Site Name" from IIS for TargetSite
            DirectoryEntry entry = new DirectoryEntry("IIS://LocalHost/" + targetSit

string.Split - not all characters allowed as separator



I am working on a site where I use the Split function on a string.

To make sure I used a separator character that I do not use anywhere in the data I selected the character '£'.

This worked fine in Firefox and Safari, but in IE8 I get an 'Index out of range' error, so apparently the '£' character is not handled correctly.

I changed the separator to ';', and then it works fine.



ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend