Sql - Unable To Escape Apostrophe/special Characters In Parametrized Query
Nov 30, 2011
The data was being read from a Gridview which had the html encoding. The solution was the following...
Dim Sht_Text As String = HttpUtility.HtmlDecode(row.Cells.Item(0).Text)
I am trying to prevent from having to escape apostrophes and other special characters in my string variables by using a parameterized query with an OleDbConnection. I have all of the parameters in the same order, the insert is working, it just does not maintain the characters. I keep getting those pesky html codes. I am trying to insert into an Access db from a web pages. As I mentioned, its working, just not the special characters.
Here's the code:
Dim pConn As New OleDb.OleDbConnection pConn = New OleDbConnection(cb.ConnectionString)
Dim SqlString As String = "INSERT INTO Strings (Mlt_String_ID, Lng_ID, Strg_Name, Sht_Text, Lng_Text, Alt_Text) Values (?, ?, ?, ?, ?, ?)"
[code]....
jp and en records already existed, the insert of fr record pushes the html codes for the small circle which represents the degree symbol. Happens for all other special characters as well.
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Aug 15, 2010
buildLetter.Append("</head>").AppendLine();
buildLetter.Append("").AppendLine();
buildLetter.Append("<style type="text/css">").AppendLine();
Assume the above contents resides in a file. I want to write a snippet that removes any line which has empty string "" and put escape character before the middle quotations. The final output would be:
buildLetter.Append("</head>").AppendLine();
buildLetter.Append("<style type="text/css">").AppendLine();
The outer " .... " is not considered special chars. The special chars may be single quotation or double quotation. I could run it via find and replace feature of Visual Studio. However, in my case I want it to be written in c# or VB.NET
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Dec 21, 2011
Essentially I am trying to replicate the Windows 7 (In-Windows) activation key TextBox form. The Form where it will auto capitalize letters, remove or deny all non alphanumeric characters except dashes every 5 characters that will be auto-input.I assume this can be done with a fairly complicated replacement Regular Expression but I cannot seem to create one to fit the needs.
This is an Example of what I have right now, but it creates an infinite loop as it removes all characters including dashes, than adds a dash, which changes the text and removes the dash again.
[Code]...
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Sep 13, 2010
i have been trying to remove special characters. i am not able to remove many crlf in middile of the string.
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Sep 9, 2011
I'm using Vb2005 to hit a SQL server. i have a pretty complicated query that hits identically structured databases on the server. I was looking into parameterizing the FROM clause but cant seem to do it.[code]Depending on the users needs I will hit the 'DriverDb' or the 'MaintDb' or 'DispDb' databases. the SQL string is actually much more complicated than that with references to the db in about 5 places so wanted to simplify it so that i could just replace with a parameter.
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Aug 5, 2011
I have two textboxes. I type in one of them and the text gets copied in real time into another textbox. There is one catch. I need to replace specific character with something else.
If I enter a quote " in textbox1, it has to be replaced with " in textbox2.
I started with something like the below code, but obviously this does not work (tried different stuff - this is for demonstration only). In the example below 'a' represents " , and 'b' represents "
Private Sub TextBox1_KeyUp(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.KeyUp
TextBox2.Text = TextBox1.Text
[Code]....
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Nov 3, 2011
I am trying to run what I thought was a rather simple parameterized insert query, but am running into all sorts of problems. SQL EXPRESS 08R2, VB.net
Here is the VB code that builds the parameters...
UPDATED Variable names:
itemDataSource1.ConnectionString = ConfigurationManager.ConnectionStrings("MyConnectionString").ToString()
itemDataSource1.InsertCommandType = SqlDataSourceCommandType.StoredProcedure
itemDataSource1.InsertParameters.Add("@short_Text", short_Text)
[Code]....
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Feb 11, 2009
I am trying to filter fields in a table that contain percent (%) and apostrophe (') characters. I kow that to filter an apostrophe you need to add another apostrophe (''). However, when a text contains the percent (%) character in combination with an apostrophe (') character, an exception is thrown. Also, when using the % character in a filter string, it will be function as an "*" (fields starting or ending with). I need the % to be considered as a character whenever the % makes part of a string in the field. How can I address these issues? [code]
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Jan 30, 2009
I have a couple of strings (in Ms-Word) which I copy and paste into variables in visual studo. Ms-Word uses high ansi characters for double quotes ("x"). I need the same in my app too. There seems to be no easy way to do this.
1. Visual Studio converts them to simple double quotes ("x") if I let it format the line automatically (auto-indent/auto-format).
2. If I turn autoformatting off and put those characters, I can see the correct characters in the code in Visual Studio editor. But when program is run the behave same as the simple double quotes. They are treated as simple double quotes and converts to simple double quotes in the output.
The only way I could find out is to use Chr() etc. functions to concatenate the character codes at appropriate places. But that's tedious on large strings. I want something to escape these characters appropriately (just like we can put two double quotes to escape the simple double quote character). [code]
1. What is the correct way to escape these characters? I don't need string concatenation; I need it in one string (like x="abc").
2. Are there any other characters also which visual studio messes up?
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Jul 5, 2011
all i have the following code <%= Replace(FindAndReplace(objDR.Item("LENTAB_NAME") ),"'","'") %> in this we are replacing the ' character with ', which is working fine. but when i tried to enter values like '"" then it is giving scripting error as
[Code]...
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Aug 16, 2009
I use ASP.net VB.net to write a XML file. In one of the element which is called "Description" i have to add a "<![CData[Class : <b>Class Name</b><br>Price: 100,000.00]]>".
[Code]...
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Mar 22, 2011
How do I query a DataTable where a value has an apostrophe in it? For example, my datatable has a lastname column and I want to search for the name "O'Bryan", how would I do it? With an SQL query I would just use a parameter & it would take care of the apostrophe automatically. Is there a way to use parameters with a DataTable?
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Jun 10, 2011
I'm writing small VB.Net app which should build reports based on data gathered from some external MDB-files (Access 2007).
It was planned that this app will use parametrized SQL queries to collect data from DBs.
One of the parameters for these queries is path to the external MDB-file.
Here goes sample code:
Dim conn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:TempTemp.mdb;")
conn.Open()
[Code]....
Looks simple but doesn't works. After launch my app throws following exception - System.Data.OleDb.OleDbException: Disk or network error.
Have spent a whole day to make it work with no success. What have I done wrong?
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Jun 10, 2011
I'm writing small VB.Net app which should build reports based on data gathered from some external MDB-files (Access 2007). It was planned that this app will use parametrized SQL queries to collect data. One of the parameters for these queries is path to the external MDB-file.
Here goes sample code:
Dim conn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;" _
& "Data Source=C:TempTemp.mdb;")
conn.Open()
[Code]....
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Dec 3, 2010
I want to use Regex.Replace to replace a Match with a context sensitive value. I use the MatchEvaluator for this. But to make things simpler lets say I'm matching %v I want %v to be escapable, so if I use \%v it will not match. Anything else should match.
The pattern I came up with is this: (?:[^\]|^)%v It basically matches %v if it occurs at the beginning of the string, or if it follows any character except . It doesn't capture the first part of the expression.I know this isn't the "right" way to do it. But it worked just fine until I noticed that when I use this pattern in a replace, it includes the character before %v in the replacement(duh, right?)So, if I have ThisIsAValue:%v and I do Regex.Replace, replacing with the string Value, my result will be ThisIsAValueValue instead of ThisIsAValue:ValueI've tried googling this but the fact that "escape character" is so heavy in RegEx, all the results are geared towards the USAGE of escape characters instead of picking them out with a pattern.
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Aug 4, 2010
example. i have 2 textboxes and if there empty it says "Incorrect Information", but how do i make it that like when a person enters something into the textbox1 it can be 3 values minimum.. like it could be eather 2 letters 1 number or what ever just more than 3 values (no special characters), and on the password.. 6 values minimum (no special characters).
[Code]...
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Jun 9, 2010
I want to build a textbox user control which will remove all the escape characters and when we put the user control in the form it should be sizable.Also i want to create a 3 tier application in vb.net.i need a sample code for it in vb.net.Can u plz post me a simple program as of how the 3tier architecture is been implemented.
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May 18, 2010
I have recently developed a serial port communication program to access my hardware firewall and its connected to the device via a converter usb to rs232head plugged to a rs232 to an ethernet cable. this ethernet cable then plugs into the device console port.
my program functions similar to that of TeraTerm. an opensource hyperterminal program written in C++ but i decided to do one for vb.net
Alright to cut the story short, i have successfully coded out the program to accept incomming data from the device but however, i'm also receiving ansi escape sequence along with it and i have no idea how i could implement codes to remove these. i have spend 3 weeks trying to look for vt100 emulation codes written in vb.net but i found none so far. most are written in c++. here's an image to illustrate the problem which im facing.
The image below is a screenshot taken when the i ran both the programs together. The bottom is tera term 3.1 and the top is my vb project which i made using msdn's example and improved on the codes. basically tera term was able to interpret those escape sequence and display accordingly to that of the vt100 terminal display. I have spent time reading on regular expressions using the inbuilt function regex in visual basic and tried parsing some strings but its not working. i guess its far more complex than i thought.
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Dec 21, 2011
Does VB have an equivalent to the @ symbol in C# to quickly and efficiently escape a SQL command line string?
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Aug 3, 2010
I've got a program that in a nutshell reads values from a SQL database and writes them to a tab-delimited text file.The issue is that some of the values in the database have special characters (TM, dash, ellipsis, etc.) When written to the text file, the formatting is lost and they come across as junk "â„¢ or â€" etc"
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.Is this ASCII or UTF-8? If it's one of those how do I correct it before it's written to the text file.Here's how I build the text file (where feedStr is a StringBuilder)
objReader = New StreamWriter(filePath)
objReader.Write(feedStr)
objReader.Close()
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Feb 5, 2009
I have a requirement to connect to a path such as[code]...
Where the first underscore is a space, and the last two underscores are ALT255. I have tried the following, based on some samples I've seen on the web, but it doesn't work[code]...
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Feb 14, 2011
I have a text file, the file is sent to me, but this file has a particularity, because between characters get special characters, as if the file was a binary file.I put a screenshot. I need to pick up and replace these characters by the character "-", those chracters are at position 13 to 18 on all lines. And sometimes there is a "\n" character that makes it split the line, and this should not happen.
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Oct 14, 2009
I have a datafield [Money] of datatype float.when i input currency value with $,or , it throws an error.How do I allow $ or "," to this field without changing the datatype(I know changing to type money may fix it)
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Feb 11, 2010
I have data that I have to send as xml. There are many characters that are receiving an error. Is there a quick way that I can ignore all these characters?
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Aug 13, 2009
In C# you can use to ignore the special characters:
string myString = "this is a " string";
that would work as one complete string... in VB, doing that does not work...Anyone know the equivalent of to ignore special characters for VB
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Oct 3, 2011
I have a code for the validation for special characters but my problem is i cannot use space bar because of included for the special characters.I want to happen is i cannot input special character except for the space bar. it is possible to do that?by the way this is my code:
Private Sub txtlastname_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtlastname.KeyPress
Select Case Convert.ToInt32(e.KeyChar)[code].....
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Jan 27, 2009
I was testing my program, and tried entering @ into a text box, but it didn't work. Is there any way for this to be allowed to be entered?
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May 17, 2012
I need to define a regular expression that accepts Alphanumeric and the following special characters:
@#$%&*()-_+][';:?.,!
I've come up with:
string pattern = @"[a-zA-Z0-9@#$%&*+-_(),+':;?.,![]s\/]+$";
But this doesn't seem to be working.
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Nov 17, 2011
I've been searching on google for a long time and i can't seems to find a code that suits my need.
Heres my problem:
I want to disable all special characters excepted the dot(.) and the underscores(_).
Heres the code i used:
CODE:
Also, it doesnt allows me to erase my text with backspace if i ever do a mistake.
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Jun 6, 2011
I have made a report in crystal reports 10 in that i want the field only displays data without the special characters like its showing 11-00-3200-002-37 but i want it would show the field like this 1100320000237 without (-). so does any one help me to do this in crystal reports 10 not in application or software code.
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