VB Dotnet - Validate Length Of Data In A Text File?
Dec 27, 2011
I am working on a VB.NET windows applications. It reads data from a text file and inserts them into SQL server DB using SQL Bulk copy.I want to validate the length of all the fields in the file. The maximum length allowed for evey field is stored in tbFieldLength table. File has 50 columns and 10,000 rows and the values are separated by '|' symbol.
If the length of a value in any row is greater than the length specified in the tbFieldLength table, I want throw an error with exact row and column details. For example,saying
"Lenght of the value in Row 6, Column 20 is greater than the expected length"Also, I want to identify all the places if the error occurs in multiple locations. What is the best way to validate the length of fields in the text file?
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May 4, 2011
I need to create a function named isValid to validate some criteria, text length character content. have validated length but i need to validate at least one Uppercase letter and one number is used(minimum) i was thinking of using a loop to check each character individually. thats probablly where i go wrong i, i often convolute the simple and keep heading of track.
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Jan 2, 2010
Here is the code I am trying to get to work:[code]I have managed to check for null. it is just the length check that I am have difficulty with.
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Apr 26, 2012
I'm trying to figure out a way to validate the user data entered:
[Code]...
This is in MVC3, VB.net. I'm looking for an easy way to validate a users input data into the editorfor field.
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May 11, 2009
Dense student here with little sleep here during finals week...I have a text field being read on a button click event (along with lots of other information being read). This field needs to have a number entered.
I either:
1) Force a default value (i.e. - "2")
2) Verify there's something in the field AND that something is numeric...
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Jan 6, 2010
what do you think would be the best way to load a fixed length text file into ms access? this is how i would normally do it if it was comma delimitted:
sql.CommandText = "SELECT * INTO [tblMailList] FROM [Text;DATABASE=" & FilePath & ";HDR=NO].[" & FileName & "]"
sql.ExecuteNonQuery()
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Jan 26, 2010
I would like to download a file using VB.NET (preferably) or C# via HTTPS.
I have this code to download a file over plain HTTP:
Dim client As WebClient = New WebClient()
Dim wp As WebProxy = New WebProxy("[IP number of our proxy server]", [port number of our proxy server])
wp.Credentials = CredentialCache.DefaultCredentials
client.Proxy = wp
client.DownloadFile("http://sstatic.net/so/img/logo.png", "c:logo.png")
How do I change this code to download a file that is stored on an HTTPS-server? I guess it has something to do with adding credentials or something.
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Mar 28, 2009
i was just wondering if there was a way that i could compare data stored in a text file such as usernames and passwords with data input into text boxes in visual studio vb2008?
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Oct 15, 2009
Our application is using VBSQL.OCX on Sql server 2000 to create temporary tables and load pipe delimited data from a text file with predefined format into the tables. It is failing intermittently doing this. 99% times it works perfectly. But on occasions it does fail with error. Once the process is rerun with the same input file it runs successfully.Basically the architecture is of Store/Head Office where there are around 200 remote stores sending set of data files to the Head Office. At HO our application sequentially processes each store which has all the set of files received, creates a corresponding table, loads the data from the file into the table and moves onto the next store.If it is for some reason not able to load the file for a store, it gives a failure message and continues with next store.Error which the OCX throws is "Attempt to convert data stopped by syntax error in source field"
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Apr 25, 2011
what is the code for finding the shortest,average and longest sentence form the text box
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Jul 22, 2009
I save data from datagridview to text file. I also load the same data from text file into datagridview for edit and update the same thing to text file. Let say this text file i called as Drill.txt. I have another text file called header.txt which need to match its value with the value of Drill.txt file then overwrite value from Drill.txt to header.txt. Now i want to make my Drill.txt in encrypted format to prevent anyone to open that file and modify out of program. They only can modify it through the program
[Code]...
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Apr 25, 2010
I'm Writing a Problem that will allow users to move data from one Data file to the next, using a Text file. My problem is that i so far i 3 test users.
No matter what test user is logged on it seems to be Reading the first user info no matter which one is on.
How do i get it to Only Read the User Info and show it up on text file that is Currently logged on.
Code:
Imports System.IO
Public Class TestForm6
Inherits System.Windows.Forms.Form
[Code].....
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Aug 30, 2010
i want to validate many textboxes with same condition....Do i need to write code for each text boxes.
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Mar 15, 2012
I want to make my staff id text box only accept upper case letters and not lower cases, how do i go about it?I wrote these lines but they stil dont work:
Private Sub txtStudID_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtStudID.KeyPress
txtStudID.Text.ToUpper()
End Sub
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Feb 10, 2010
I have a form that a user inputs either A B C or D into a text box. I need to validate that one of those four letters has been entered in the text box. I am using a case statement but I think an array might work better but I can't figure out how to validate a string in an array. Or if there is a better way to use the case statement...Here is my code snippet This works, but it seems like it is the long way to do it. Also as soon as I click OK on the message box it immediatly goes and shows my next form. How do I get it validate, let the user redo, and then bring up the other form?
[Code].....
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May 5, 2009
I am creating a program and I need to validate my text boxes. For the program the user needs to put in a phrase. But I am not sure how to make sure that the user actually entered in a phrase, the phrase isn't (ex.) skldkfdl, or that there isn't a space.
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Sep 17, 2008
I've been asked to validate the content of a text box to make sure it's only alphanumeric.Now I have 2 question on this from you experts:
1. alphanumeric value needs to start with alpha or it can start with numbers also?
2. I wrote the following code to test my entry but it's somewhere wrong I cannot understand! How can I go through each character to make sure it's alphanumeric?
[Code]...
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Dec 2, 2010
I would like to kindly ask if there is a dictionary in vb.net?
I would like to validate some data from the user and their corresponding value.
e.g.
2 = ABC
6 = MNO
6 = MNO
7 = PQRS
8 = TUV
8 = TUV
3 = DEF
if the user had input the numeric data on textbox1, then the alpha phrase will show on textbox2.
What i want to run is that if i press the "execute" button, it will look for a word than can be create using these letters ( e.g COMPUTE )
Then it will display the word "COMPUTE" on textbox3.
Is there a function or method i could use to do that?
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Mar 6, 2012
im having trouble try to validate the data in the inputbox. I am trying to make sure only integers/decimals are entered, but the code is failing to reconize it in the loop, and the loop dosent promt the user to a valid number. What am i doing wrong or this a weakness of the inputbox?
'Developer- John Nelson Date- March 5, 2012 Application Name- Semester Final Averages Purpose-This application allows an instructor to enter up to 10 project scores from a course for a semester compute a students average score. The application displays the final average for the semester with the two lowest grades removed from the average. The eight scores are sorted in order and final averages are written to a file named grades.txt
[Code]...
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Sep 9, 2011
i am creating windows form for staff registeration which this form is connected to database ,i want to put messagebox which if" Please put number in this field" in TELEPHONEtextbox.text .The reason is to inform the user that the data which user type is wrong if their type a string in this Telephonetextbox.text Any advice how i am to do it.Here is my code For your info I am using visual studio 2005 & sql 2005 as database .
Private Sub btnregister_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnregister.Click
If Me.NAMETextBox.Text.Trim.Length = 0 Then
[Code].....
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Nov 11, 2009
Might be a simple question but i was just wondering how you can validate a text box to check if it has any symbols in it? I've stopped my program from accepting integers but i don't know how to stop symbols like $, ^ & etc. All i want is letters.
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May 15, 2010
I want to validate a textbox.text value to a currency. For example if a user enters $154.45 i want the value to be 154.45 or if the enter USD154.40 I want that to be invalid. how can I do this? basically check that the input is all numbers.
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Jan 20, 2009
I have a form with '7 text boxes' and '1 list box' (for country selection). Basically, i want the user to have to input data into all 7 text boxes but the list box has to contain a country from the drop down box (so the user cant just type random text into the list box)If all this ^ data has been met, then the 'button' is enabled.What would be the easiest way to implement this.
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Aug 17, 2011
I want to validate text taken from a textbox and want it in a specific format. I have tried masked text box but when the textbox is empty it shows something like a blank line in the text box....How can i avoid that and show the masked textbox just like a simple empty (still masked) textbox?Secondly I want data like csc-(somenumber).....Can I add some random number automatically after 'csc-' characters?
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Jun 12, 2011
I'm struggling with my computing coursework in college and I though My issue is simple but I can't get it right. I need to validate the text into a textbox and check that it contains ONLY alphanumeric characters, but it MUST contain both, not either numeric or alphabetic, but some of each.The textbox should store information about a Street address, that's why both the street Name and the property Number have to be input. Spaces " " and points "." should also be allowed.If it helps, something like "12" or "St. Davis Street" should NOT pass the validation checks, whereas "St. Davis Street 12" will do.I would like to get it done with regular expression as I've been using them throughout my work, but I don't mind other solutions.I'm using Visual Studio 2010 Professional, 4.0 framework and Visual Basic.
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Apr 12, 2009
I would like to know that how am i going to validate the data inside a currency field to see whether its format is correct or not ?How am i going to reload the data when an action is canceled ? For example, when i click the cancel button, a message box will pop up and ask the user whether he/she want to cancel the action. When the user click yes, the action will be cancel and the data inside a database will automatically display inside the text boxes, as if everything is start from the beginning
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Nov 21, 2011
I created the upload page using with FileUpload server control. And I used regular expression validator to validate file extension.
<asp:FileUpload ID="AttachmentUpload" CssClass="text" size="58" Width="376px" IE:Width="385px" runat="server"/>
<asp:RequiredFieldValidator SetFocusOnError="true"
ID="AttachmentUploadRequire"
runat="server"
[code]....
It is Ok for chrome and IE but not Ok for firefox.
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Jun 10, 2011
I know you can validate textbox text by using the keypress events. But the form i'm working on has multiple groupboxes with multiple textboxes. So rather than having a sub routine to validate every groupbox, i was wanting to have just the one keypress event that handles the textbox entries, and depending on the textbox calls a specific validation routine.[code]
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Sep 20, 2009
I have a question about how to validate a text box with only word inside. Below is my code i use, it's only can detect if number 1 to 9 in single number, but not 11 or 999 or Joanne11 Joa223nne etc. I want it can detect the text box have and number or symbol then will show an error messageBox, else continue.
[Code]...
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Apr 20, 2011
I have been searching for an easier way to validate the text property of my combobox.
Below is a background of what I am try to accomplish:
I have a from that contains many controls, mainly comboboxes that are bound to datatables. I have these set up in such a fashion as to when the user begins to type, the values begin to show and auto populate the combobox. This makes the selection process easier to select an actual value in the list. But, as we all know, you can lead a horse to water but you can't make him drink. Users still have the ability to type something that is not in the list. I do not want to allow them to leave the combobox until the have selected or typed a valid value from the list because I am building a SQL query to retrieve data for a later form. I don't want to lose the above mentioned functionality of being able to type it in. I currently have it working as follows, but there must be a more elegant way to do this.
I first populate my combo box like so:
CODE:
The part I don't like the most is that I feel like I should be able to use the list already loaded in the combobox data, but I can't figure out how to do it. So I end up having to reload it, this seem like a waste of time.
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