Escape Reserved Keywords In Sql Statement?
Dec 13, 2010
I'm trying to execute an sql statement in vb.net to an Access database, I am escaping the reserverd word using square brackets []. This has worked in all my SELECT statements within the program.
The reserved word is level
But the SQL statement below fails saying
Syntax error in INSERT INTO statement.
If I directly copy the statement and execute this in Access it works fine
datalayer.getDataTable(String.Format("INSERT INTO users (username, password, [level]) VALUES ({0}, {1}, {2})", username, password, level))
The above statement works if I remove [level] and replace this with another column name.
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Nov 7, 2011
I am running an update sql statement that is returned a bad request error. This is only happening when I'm using reserved words for the field value. I know this happens for table and column names and how to account for that but I've never had this with the actual value.
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Mar 13, 2012
in C# you'd put a @ in front of a reserved keyword. Is there any equivalent in vb .net?
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Mar 3, 2011
Is there a simple way to remove reserved characters from a string without looping through it and testing each character? I want to remove <>:/?|? from strings that are used for folder and file names.
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May 25, 2010
I am creating XML files by combining 3 text files; Header contains the start of the XML file, Body contains a repeating section of XML with placeholders that will be replaced for each entry in the database and Footer contains the end of the XML file.Currently I am using Stream writer to create the XML file, the problem comes when the data I am adding in the body section contains reservered characters e.g. > < & etc as the XML will break.Is there a better way? The XMLWriter examples I have seen seem to start from the premise of a complete XML document, which I don't have.
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Apr 25, 2009
I'm creating a car class. Make and model are properties but both make and model appear to be reserved words in C#. What's the best practice for naming properties/methods when your preferred name is a reserved word?My first instinct is to call the properties CarMake, CarModel (so a convention of ClassNamePropertyName).My mistake, make and model aren't actually reserved words. VS intelliesense and code coloring made it appear so to me at first glance. Though my question does stand for future reference.
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Jun 12, 2011
I am not the original author of this software project and the code is poorly documented. I am mainly a Java/C++ developer.The program displays the tree structure and allows files and folder to be selected. The program is getting errors with FileSystemTreeView when trying to return nodes on a system with a reserved partition.Here is what is happening: tree.SelectedNode = tree.Nodes(0) 'returns error with system reserved partition.calling, GetDriveList() will properly return all the drive letters - and not throw an error. Only when trying to get a tree.Node() or tree.load() is the error occurring.
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Apr 6, 2010
I want to do the equivalent of the following VB in c#
Function([class]) "hello"
This would be the same as this in c#
class=>"hello"
The problem is that the word class is a key word in the language. But I want to use it as a variable name. In the VB example you can use the [] brackets to 'escape' that key word and allow it to be used as a variable name.
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Mar 26, 2009
I want to write a code
Dim comm_update As New OleDbCommand("update item set status = "On Loan" where itemid=@itemid")
I know I cannot write "On Loan" as above, but I don't know what's the right way. status is an attribute in my access table.The SQL should update the status to string "On Loan"
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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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Nov 28, 2011
I need to convert this string to the proper form in my vb,net code
if (c == '"') {
s.Append('"');
} else if (c == '\') {
s.Append('\');
} else if (c == '/') {
[Code]...
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Jan 6, 2011
I'm trying to track down the cause of an annoying interface bug in an app that was ecently upgraded from VS2003 to VS2008 (the bug did not exist pre-migration).What happens is this :1) User clicks in textbox containing a date.2) User clears date3) User tries to move to another field, but can't. No error messages appear - it's as if the validation failed.Further info :1) The textbox's Text property is bound to a dataview which uses a datatable as its source. The bound field is a nullable datetime field with no constraints or default.2) The Validating event fires and the CancelEventArgs property is not set to Cancel. The Validated, LostFocus and Leave events all fire as well, going LostFocus > Leave > Validating3) I can't see any code changes relating to the control or the datasource with a couple of exceptions. The first is that this :
Me.txtRangeEnd.DataBindings.Add(New System.Windows.Forms.Binding("Text", Me.dvClientNos, "RangeEnd"))
has now changed to this :
[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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Sep 18, 2009
For displaying the character & in a button as text, i am using &&
I would like to display the string % in another one button but the &% does not work.
So how can i display the char %
By using this btn5.Text = "%" the percentage symbol is not displayed at all!
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Jan 6, 2012
I am using VB2010. I am trying to use the escape key to close the application I have made. While the webbrowser is selected the shortcut doesn't work.
So far I have used the following code:
Private Sub Form1_KeyDown(ByVal sender As Form, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
If e.KeyCode = Keys.Escape Then
[Code].....
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Aug 21, 2009
[code]How do I do this in VB, while having a root namespace in the application, is this possible?
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May 13, 2009
In VB.NET, you can surround a variable name with brackets and use keywords as variable names, like this:
Dim [goto] As String = ""
Is there a C# equivlent to doing this?
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Jun 24, 2009
Why does VB have more LINQ keywords than C#?
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May 19, 2009
Get web sites keywords
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Dec 10, 2009
If I needed to escape a double quote character within a string literal I'd use two consecutive double quotes as follows:
Dim name = "Chuck ""Iceman"" Liddell"
However, it doesn't seem like consecutive # works the same way. The compiler is expecting a compiler directive to follow the # character, even when its enclosed in double quotes. How can tell the compiler that I want a # character in my string?
EDIT: as a few of the answers below point out, # is not a reserved character. I closed my solution in Visual Studio and re-opened it and no longer got the compiler squiggles warning me.
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Aug 11, 2009
How do I escape form data in VB.net? I have various lines like this[code]...
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Aug 16, 2011
How to exit a form using escape button in vb.net 2005. I need to show a msg box with yes or no conditions only.... Now I am using this code for exit a form..
If e.KeyCode = Keys.Escape Then
Application.ExitThread()
End If
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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 18, 2010
I am facing an issue with my code the thing is i want to escape { in the string.format function Of course one way to escape it is to use {{ (2 curly braces)Is there any other way possible to escape without using the double curly braces.
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Jan 9, 2012
I see that print methods have changed in for vb.net 2010. I have looked up and down the internet and have found many examples for earlier versions of vb, but these can not be used in 2010.
I can not use graphics.drawstring / printdocument method because I need to send escape sequences.
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Jan 23, 2012
I am trying to replace an & in the name of a service in an xml document.
The & is causing an error. Is there anyway i can write some piece of code which will escape "&" as " & a m p ;"?
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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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Oct 5, 2011
I have a question here. I'd like to develop a vb.net program to run thru all source code in a folder to look for certain strings.my initial thought is to create an .ini file then program will read the strings then start searching in the source code for the strings entered.
the final output will be an excel sheet, stating the filename and the line number.
is this a good way to do it? if yes, can i ask for a skeleton program?if no, any other way?
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Sep 17, 2011
What im trying to get is when a button is pressed, it looks through a textbox and highlights the keywords. I found this:
Dim srch As String = "1"
Dim a As Integer = TextBox1.Text.IndexOf(srch)
TextBox1.Select() 'set focus to control
[Code]....
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Mar 18, 2011
Im just wondering how i can achieve the following, this is for my own learning. Im going to be passing an XML file to VB.net and im hoping to pick out keywords from within the XML file is that possible?
So say the XML file had words such as "hello" "Today" "Next Week"
how can i possibly pick these out and store them in a varible?
I can do the first bit i.e passing the XML file in reading it etc, but im curious on the second part?
Can any one help me or if any one knows any good tutorials and locations please do let me know.
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