.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

Disable " ' " character in texboxes

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

Hi everyone,

I guess I need help from geniuses every day :(

I quiet struggled with this and could not figure this out.

I have bunch of textboxes on my ASP.NET form.

I found a problem with character    '    (next to the enter key) this causes error when

a user types in, because it gets denied by our SQL Server.

So somehow I want to disable this character in ALL OF MY TEXTBOXES.

I tried to use ASP Validation control first, but there are hundreds of textboxes, so I gave up..

Here is what I tried:

<asp:TextBox runat="server" MaxLength="200" TextMode="multiline"
                        AutoPostBack="false" ID="textboxDescription" Rows="3" Width="300px"></asp:TextBox>
                        <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server"     
                        ErrorMessage="' is not allowed." 
                        ValidationExpression="^([^']*)$" />


IT WORKS. But is there a another way to do this? I have like 200 textboxes, which this

View Complete Post

More Related Resource Links

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

Use Membership but bypass / disable password usage for users


I have an application that does LDAP authentication. The authentication is done on the code behind page of my Login.aspx page. Once the user passes LDAP authentication, a cookie is set and I redirect:

FormsAuthentication.RedirectFromLoginPage(UserName.Text, False)

I would like to setup membership in my application and keep track of some user information. But due to company security requirements, I cannot store user passwords on my application. That must stay on the LDAP server only.

Is there a way to store users but disable password storage on the aspnet_membership table?

Web Deployment Projects (WDP) arabic character



I built web project using asp.net & c# in VS2005 and i use arabic label in my project and every think working good when i run my application. but when i use WDP to make msi file All arabic letter come like ?????. 


DirectX 8.0: Enhancing Real-Time Character Animation with Matrix Palette Skinning and Vertex Shaders


DirectX 8.0 allows the creation of smooth and realistic character movements that are more life-like than simple articulated structure animations. This is made possible by its improved support for vertex tweening and blended vertex deformations, also known as soft-skinning. After a brief history of the use of these techniques in DirectX, soft-skinning using the fixed function pipeline is discussed. This is followed by the use of matrix palettes from within vertex shaders to create a customized soft-skinning solution that takes advantage of the benefits of vertex shaders, such as hardware acceleration and custom lighting algorithms without the limitations of fixed-function solutions.

Benjamin Freidlin

MSDN Magazine June 2001

Disable check box in a gridview does not working



I have a check box in a template field in a gridview.

Based on some condition, I want those check boxs to  be enable and disable.

I am trying the below code but does working..

 protected void GVstudents_RowDataBound(object sender, GridViewRowEventArgs e)
              if (e.Row.RowType == DataControlRowType.DataRow)
                    string studentID = GVstudents.DataKeys[0].Value.ToString();
                    int stdID = Convert.ToInt32(studentID);
                    int schID = profile.getSchoolIDByStudentID(stdID);
                    int tchrID = profile.getTeacherIDByStudentID(stdID);

                    if (patti.chkIsTeacherPaid(stdID, schID, tchrID))
                        CheckBox cb = (CheckBox)e.Row.FindControl("chkTeacherPayment");
                        cb.Enabled = false;
                        cb.Checked = true;


any help??

Disable filtering on a Dynamic Data list view.


I have an entity set of NotificationTemplates, and each one of these has a collection of zero-many SmsTemplate entities. When editing or viewing a NotificationTemplate, I have a link to View SMS Templates. That link takes me to a List view for the SmsTemplates entity set, filtered for the NotificationTemplate I was viewing.

How can I prevent the user changing this filter to show SmsTemplates for another NotificationTemplate? That is, I want the filter, but it must be read only. The drop-down just mustn't drop down, it must just display the name of the NotificationTemplate that these SmsTemplates belong to. To view SmsTemplates for another NotificationTemplate, the user must click View SMS Templates from that other template.

This was originally asked by myself on SatckOverflow at: http://stackoverflow.com/questions/3514373/disable-filtering-on-a-dynamic-data-list-view

HTML Table Disable


I have a HTML Table that I use to place the control in so they display nicely on my Web Form.  I also use the Disable method to keep unwanted users from editing those controls based on their log in information, however I still want the information to be displayed for their review.

The information is displayed for example in the Text Boxes, however when they hit Enter on the form because the table is disabled for some reason the information is lost when I do my update to the SQL Server (the text box shows "")?

Why is it I can see the information on the screen, but the text box shows empty when hitting enter on the form?



Checkbox disable/enable


I hope someone can be kind enough to help/advise me with this.

I have a web form with multiple checkboxes on it , with one of the checkboxes as the main (controlling) checkbox.  By this I mean that when this main checkbox is checked then all the other checkboxes need to be disable and when its unchecked these other checkboxes need to be enable.

I've found (plenty of) code to do this in javascript but i would really prefer to to it in vb(.net), if possible.

I hope all this makes sense to you.


Character counter with Editor control?


Has anyone made this work?  I'm trying to implement a character counter that counts the total text and markup in the Content property of the Editor.  It's easy to do with a button control and feeding Editor.Content.Length to a label but that doesn't give the user a running count. 

I tried several javascript character counters, including this one:

<script type="text/javascript">
      function pageLoad() {

      maxL = 255;
      var bName = navigator.appName;
      function taLimit(taObj) {
          if (taObj.value.length == maxL) return false;
          return true;

      function taCount(taObj, Cnt) {
          objCnt = createObject(Cnt);
          objVal = taObj.value;
          if (objVal.length > maxL) objVal = objVal.substring(0, maxL);
          if (objCnt) {
              if (bName == "Netscape") {
                  objCnt.textContent = maxL - objVal.length;
              else { objCnt.innerText = maxL - objVal.length; }
          return true;
      function createObject(objId) {
          if (document.getElementById) return document.getElementById(objId);
          else if (document.layers) return eval("document." + objId);
          else if (document.all) return eval("document.all." + objId

TextField control add extra character space at end of it



On one of my publishing page layout i have added Content Field (field of content type) that is

<SharePointWebControls:TextField FieldName="MyName" runat="server"></SharePointWebControls:TextField>
"MyName" is single line text column in the content type.

Then i edit the page which is using this page layout and add one text "Sandip" in that MyName field. Now problem is, this filed show the text on the page but at the end of it, it add space. i.e- "Sandip "

I m not getting why it is showing this.

Please help..!

Regards Sandip Patil Sharepoint Developer http://www.worldofsharepoint.com

How to get character count in 'Multiple Text 'column using Calculated Column?


Hi All,

I have a multiple text box in a list

I want

  • A column which lists number of characters in multiple list column example 188, 199 etc
  • Multiple character column must not have more than 200 chars
Is this possible?

Appreciate all the help!


Mission Impossible? Use Javascript to Disable a Multi-Line Rich Text Field


Hey Community,

Here's a tough one that I have struggled with and so far have not been able to find an answer for - how do you use Javascript to disable a multi-line rich text field.  I have customized a SP Edit form by adding a CEWP.  In the CEWP I have added the Javascript below (only a partial code sample provided) to disable several fields in the form.  The code works fine for single line text fields but it does not work for multi-line rich text fields.  Any suggestions?

<script language="javascript">
//This runs the function when the form first loads

//This locks the fields the users should not modify
function lockFields()
  var theInputTFTitle = getTagFromIdentifierAndTitle("Input","TextField","Title");
  theInputTFTitle.readOnly = true;
  theInputTFTitle.style.color = 'gray';
  //alert(" Value: " + theInputTFTitle.value);//for testing

   var theInputDDLReplyStatus = getTagFromIdentifierAndTitle("select","DropDownChoice","Reply Status");
  theInputDDLReplyStatus.disabled = true;
  //alert(" Value: " + theInputDDLReplyStatus.value);//for testing

  var theInpu

Disable VS2005 Undo?


Does anyone know if there is a way to disable the Undo feature within VS2005?  I searched through the options but nothing jumped out at me.


Disable links based on membership



I've somehow managed to successfully get Membership working on a test site I'm playing with (learning!). I've reached a point where I can redirect users to another page if they do not have the required level of membership - using the allow feature in a web.config within a folder.

What I would like to do now is create a main menu of links (a back office menu visible after the use has logged in), and disable a link if they do not have access to view that page. Is this complex? I'd be grateful for any sample code to get me started.

Many thanks

disassembly tab window how to disable


everytime i debug the application i get the disassembly tab window
 i tried tools/option & unchecked show disaasembly if not is not avaliable & sourec file to exce;ty open the original file

but still i get
after making the chnages i restarted my system but still i get it
how do i disable teh disassembly tab

sitemap control user rights enable and disable



iam using masterpage and sitemap in my project, what i want to is that

if user login is did, based on the user previlage in need to show the sitemap menu page

if user i have the previlage to see the page then i should enable that page otherwise

i need disable that page

looking for the valuable suggestions

System.Data.SqlClient.SqlException: Login failed for user . Reason: The account is disable


Hi All,

Thank you for advance.

I created a widows service for mail schedule with c#.net and sql server 2005 and it is working fine for past one year.

now sometimes i am getting the "System.Data.SqlClient.SqlException: Login failed for user '<UserName>'. Reason: The account is disabled." error.

then i restarted the windows service manually and working.

what is the problem in my sql server connection and how to fix that issue?

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