Web Forms :: Restrict Special Characters In TextBox

Dec 19, 2012

I want to restrict special chars `!`~@#$%^&*()_+|-={]}[;:,.?/ without any alphabat in asp.net textbox.

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VB
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[Code]....

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I have an application where the user uploads files.

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Web Forms :: Regular Expression To Replace All Special Characters?

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I am trying to write a regular expression to replace all special chracters within a string so that I am left with just alphanumeric characters and spaces or full stops.

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[Code]....

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Regular expression validator  for not acception special characters and space.

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I am using this method to encrypt password.. When user enters special characters it gives an error.. Method below :

private string base64Decode(string sData) {
string result=null;
try
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System.Text.UTF8Encoding encoder = new System.Text.UTF8Encoding();
System.Text.Decoder utf8Decode = encoder.GetDecoder();

[Code] ....

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Data Controls :: Restrict Special Character On All TextBoxes And TextArea

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I am referring [URL] ....

I want to apply this function on all textboxes and text area rather than applying it on keypress event on all text boxes.

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I have a comment control in vb.net, It works fine but the problem is if you use special characters like " ' ! $ * It never save the comment and through javascript error ( As i am using Ajax ) , Is there any workaround to save special characters aswell?

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I've got a program that in a nutshell reads values from a SQL database and writes them to a tab-delimited text file.

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When the value is viewed in the immediate window, before it is written to the txt file, everything looks fine. My guess is that this is an issue of encoding. But, I'm not real sure how to proceed, where to look, or what to look for.

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Jul 21, 2010

I'm fairly new to ASP.NET and have the following problem:

I add data to an Access database through a form on a aspx.-page. Now my problem is, if the user enters characters like " or & the syntax of the SQL command i send to access changes and the whole thing crashes. :-(

It should nevertheless be possible to write special characters in the Access database. How can I do that??

Seconde question:

I put a GridView under my form to display the data entries from the access database to the user. This GridView has 3 Options in every Line at the beginning (Edit, Delete and Select) by default. OK, when i klick on Delete it comes the following error message (hand-translated from german into english ;-] )

"Deleting is not suppoorted from the datasource "AccessDataSource" unless the DeleteCommand is not specified.

[NotSupportedException: Das Löschen wird von der Datenquelle "AccessDataSource2" nicht unterstützt, sofern nicht DeleteCommand angegeben wurde.]
System.Web.UI.WebControls.SqlDataSourceView.ExecuteDelete(IDictionary keys, IDictionary oldValues) +1648440
System.Web.UI.DataSourceView.Delete(IDictionary keys, IDictionary oldValues, DataSourceViewOperationCallback callback) +89
System.Web.UI.WebControls.GridView.HandleDelete(GridViewRow row, Int32 rowIndex) +714
System.Web.UI.WebControls.GridView.HandleEvent(EventArgs e, Boolean causesValidation, String validationGroup) +869
System.Web.UI.WebControls.GridView.RaisePostBackEvent(String eventArgument) +207
System.Web.UI.WebControls.GridView.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +175
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565

The equvivalent error message appears when I klick on the "Edit"-Button...
How do I have to specified the Delete and EditCommand?

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