I have masked textboxes which occasionally have numeric input that contains zeros. I copy the input to an instance of a structure (that is, to a string property of the structure), and the input--if it has zeros--tends to lose those zeros. For example, if I have "9034040," and place it to the string, it actually become "9 34 4 " with spaces in place of those zeros.
View 6 RepliesI HAVE A double value as 4 now i want to convert this to string format as "04"
So it must convert each number to a format as "00"
How do you do this using string.format?
ExamplesIF the user enters a 00001 the count would be 4If the user enters a 0811 the count would be 1
View 2 RepliesIts normal to have the DGV ignoring zeros ? If the value of the string is: '23,00' in the DGV it will be showed as '23' but if it is '23,23' it will appear as '23,23' is that normal ?
View 3 RepliesHow can i get a structure member by it's string name?
View 1 Replieswriting an XML-formatted string so that I may later encrypt it.If I create an XMLDocument,it will insert its formatting tag <?xml version="1.0" encoding="Windows-1252"?> and I need to avoid this.I'm not very familiar with streams, or how to output an XMLWriter to one.
View 3 RepliesWe know that VB string start and end with double quotes " "
So we have to use "" if we want " in VB string.
I wonder if there is a regular expression pattern which will match VB string?.
I am developing some program which will frequently read a file and occasionally write to the file. The file, however, is extremely huge - it may contain hundred of thousands of rows, and each row has a particular meaning to the program. That, is there may be loads and loads of rows, and a row may contain additional elements.For instance, a row might look like the following:
Code:
3 00000111000000 01110110 2 0
I am writing my program in C#, just fyi.Given my very large file, I am refraining from the idea of just using a text file, which is an obvious choice. I am also hesitating to use a database and a table.
How would I make use of a List(of String) in a structure in vb.net. for example
Structure examplestrut
Public exampleslist As List(Of String)
End Structure
How would I call exampleslist.add("example 1")?
I have a string: Dim strXMLTags As String = "<tags><test>1</test></tags>" And I want to verify that all opening tags have a closing tag in the proper place. So if I put the previous string through, it'd work. However, if I put: Dim strXMLTags As String = "<tags><test>1</test>" Then I want it to give me an error. Is there an XML structure checker or something of the sorts? Or should I just try and load it to an XML document and if it errors then, then I know.
View 2 RepliesI have structure that looks like
Public Structure MYID
dim id as long
<VBFixedString(20)> dim AppName as string
<VBFixedString(20)> dim CompName as string
end structure
now i want to send to my server with something like
with MYID
id= 710
AppName= "MYName;"
CompName="MYCompName;"
end with
i need to send this as string to my server....
"710MyName;MyCompName;"
dim buffer as [Byte]() = system.text.encoding.ASCII.Getbytes(MyID)
I do a connection.send(buffer) i get the values converted... i need to send the straigt text?
I want to know how I can convert string to a point ( {X=150, Y=150} ) I'm having a little trouble figuring this one out.
View 2 RepliesI am trying to convert text in a text box (txtEventDate.Text) to a date type in a structure: ThisEvent.EventDate (declared as date). The text in the textbox is of the form: 05/18/1927 (i.e. May 18th, 1927) and after looking long and hard thru the forums attempting several different things, like:
'ThisEvent.EventDate = CDate(Format("#" & txtEventDate.Text & "#", "mm/dd/yyyy"))
'ThisEvent.EventDate = Date.Parse(txtEventDate.Text & "12:01:00 AM")
'Date.TryParse(txtEventDate.Text, ThisEvent.EventDate)
The code is commented out because none of them convert the string to a date value (I know a date does not have a format and I have looked thru the MSDN). How can I stay logged and composing a thread past some arbitrary time limit that forces a re-login?
I've got this Function:
Public Class QueryStringUtil
Public Shared Function GetQueryStringValue(Of T As Structure)(ByVal queryStringVariable As String) As T
Dim queryStringObject As Nullable(Of T) = Nothing
If queryStringVariable <> Nothing Then
If HttpContext.Current.Request.QueryString(queryStringVariable) IsNot Nothing Then
queryStringObject = CTypeDynamic(Of T)(queryStringVariable)
End If
End If
Return queryStringObject
End Function
End Class
When I try to call it like this:
Dim intTest As Integer = QueryStringUtil.GetQueryStringValue(Of Integer)("stuff")
Dim stringTest As String = QueryStringUtil.GetQueryStringValue(Of String)("stuff")
Dim datetimeTest As DateTime = QueryStringUtil.GetQueryStringValue(Of DateTime)("stuff")
stringTest gives me the error:
'String' does not satisfy the 'Structure' constraint for type parameter 'T'.
I want our other developers to not worry about having to convert a class to a structure or some stuff like that when they call this function. I just want them to be able to put a standard type in the (Of T) and have it work. I don't mind writing in extra calculations to achieve that. The other problem is I also need the function to be able to return an actual null value, so I kind of need the queryStringObject as Nullable(Of T). Which means I have to have T as Structure otherwise it tells me that won't work. So looks like if I change what T is I need to run some calculation to delcare the var as nullable or not.
I tried overloading this method so that one returns T and one returns Nullable(Of T) like so:
Public Shared Function GetQueryStringValue(Of T As Class)(ByVal queryStringVariable As String) As T
Public Shared Function GetQueryStringValue(Of T As Structure)(ByVal queryStringVariable As String) As Nullable(Of T)
And naturally it's telling me it can't do that since they just differ by return types. Is there anyway to overload this? I really don't want to have two functions.
I am trying to strip the first 75 characters from various strings (sentences / phrases) and it seems right but I need to ensure that the no words are truncated in the process. Meaning that if the 75 character is part of a word it needs to fall back to the beginning of the word or nearest space..
I thought of stripping the entire string into separate words and then counting the length of combining the words and stopping when I reach the target but what do I do in the case when it is not a valid sentence just a bunch of characters jammed together or spaces and one character. I thought of using grammar parsing tool libraries and parsing into tokens etc but that seems too over complicated.
Here is what I have so far:
If htext.Length() > 75 Then
Dim regex2 As Regex = New Regex("^.{0,75}", RegexOptions.IgnoreCase)
Dim m2 As Match = regex2.Match(htext)
[Code].....
, I was wondering if it was possible to reference a member of a structure by using a string variable. Here's an example of what i'm talking about:
[Code]....
Now, I know that you would usually reference the value in any of the members by using the following (String1 in this case)
[Code]....
Module Module1
Public Structure structure1
Public TRANS() As structure2
End Structure
Public Structure structure2
Public X() As Integer
End Structure
End Module
when i get the money field from sql server to vb.net code, i always get 1.0000 instead of 1.00. how do i convert this to 1.00 in vb.net?
TD = New HtmlTableCell
If Not SqlDR("Price") Is DBNull.Value Then
TD.InnerHtml = SqlDR("Price")
Else
TD.InnerHtml = "0.00"
End If
I have a masked textbox formatted as "##:##:##:##". When I send the variables to it if the number is <10 I don't get the leading zero displayed. For example:[code[What I want it to look like is 00:01:02:03, what I get is 00:12:3. I've tried the variables as an integer and a string with no luck.
View 2 RepliesIm having a little problem with adding textbox.Im generating unique key with OrderNumber+ProductId+Series.
OrderNumber:18501
ProductId:2100
SeriesNumber:01
Series starts at "01" and gets added one everytime I hit button1,so next time I press button1,it will be "02".When I add them up this is the result I get: Result:18501-2100-1
But I want the result to be like this: Result:18501-2100-01
I want the series number to be a two digit value. How can I make this happen?Do I look
I'm new to VB 2008 after having spent a long time with VB6, so I apologize if this is a stupid question. But I'd really like to have this straightened out.
Let's say I have a pretty large structure that has lots of properties.
Code:
Now say that I want an internal database with about 10 instances of this structure total, describing, say, 10 different products that a store sells. When these values are loaded from a database, they remain totally static. (However, they can be different each time a program loads)
Now say that I have a class. Each instance of this class is a type of that BaseProduct structure. Meaning, each instance of the class pertains to one of the 10 types of products that the store sells. However, this class has additional properties that pertain specifically to each instance, which are not static.
Code:
Now, the problem here is... If I have 200 different transactions, each one contains an instance of BaseProduct. BaseProduct is HUGE, and is largely redundant (only 10 types possible), so I think it's a little silly to include a whole copy of it with EVERY transaction. However, the Transaction class really needs information regarding the base product it pertains to. Is there a way to, instead of declaring a New BaseProduct in the Transaction class, to simply make one of the properties of the Transaction class a pointer to a BaseProduct variable?
In VB6, I would accomplish this by making a BaseProduct(10) array, and then giving each Transaction an ID number referring to an entry in that array. But in VB 2008, using class structure, this is impossible. I can't define the BaseProduct(10) array outside of a class in a namespace, and if I define it in the actual application's form, then the class loses modularity since it relies on the application that's using it.
I am trying to communicate with an external device and i am trying to send a byte array to the external device via sockets but i am always getting a response the message size is too small so i am not sure what i have done wrong. Between the data type there should be no alignment present and all numbers are represented in little endian format. The char array is not null terminated as mentioned in the protocol specifications.
I have to send data based on a struct that embeds 2 other struct. So here's my vb.net code for the struct used to convert to byte array and the sending part.
Public Structure MESSAGETYPE_OIP_Login
Dim Header() As COMMANDHEADER
Dim UserName() As PSTRING
[Code]....
Converting an object .tostring() removes the leading zeros. The object is not a fixed length, so I can't do object.tostring("0000000") where the number of zeros represents the fixed length.
An example object value is "0357" when I convert that object .tostring it becomes "357".
Is there a method for keeping the leading zeros where the length is not known?
I have a field that needs to be 10byts long. However, if the number does not use all 10 bytes, then it will need to have zeroes in front of it.say you have a Check number of 12345, well in the text file it would need to show up as : 0000012345..This is the code I'm currently using but when I open the text the other 5 remaining bytes are just spaces. [code]
View 8 RepliesHow to maintain Zeros in incremented values ex: ECJ-00001
[Code]...
In my app. I am using this code block to extract numbers from a string in a TextBox.
Dim getNumbers
As String =
""
[Code]....
How can I get the leading zeros (if there is eny) removed from the number tha has been extracted?.
I am receiving this error message: "Input string was not in a correct format." on my ASP.net 2.0 VB project.
When looking at other posts with this error its obvious that each time it will be specific to the users' project. Therefore my main question is, is it possible to generate a more informative error message?
I am already in debug mode but it does not tell me in which string the problem lies. I am converting some strings to integers with "Cint" and have also tried the Integer.Parse() method to no avail.
var queryString = string.Format("filename={0}&filestream={1}&append={2)", fileName, Convert.ToBase64String(b, 0, bytesRead).ToString(), 1);
above line of code giving error 'Input string was not in a correct format.'
Basically I need to make an if statement that checks the number of characters entered in a text box and pads left with 0's if there is not 3 characters entered.
Also, if letters are entered, I'd like it to produce an error message, or just not accept letters at all.
Is there someone who has done something similar in the past that might be able to help me format this textbox?
When using the command TimeOfDay.Now.Hours and TimeOfDay.Now.Minutes, etc... and the time is 09:03 (for example), the output is
93 when it should be 0903