i have a datagridview linked to a access DB that right now looks in the 5th column and counts the number of "c","o" (completed and open) but it gets the count from the entire data base. I am able to filter the ones for a certain day and view them on the grid but how to count the number of occurrences that are visible and not the ones that have been filtered out?
View 3 RepliesI am trying to count the number of times a specific character is in a string. The problem is when I run the program the letter doesn't advance from "d" in the string "debugging" and doesn't display the number of time the character "g" is found.
Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) Handles Button2.Click
Dim letterCount As Integer
[code].....
How do i count the number of visible characters in a text file in vb 2008 (ignoring spaces, tabs, carriage returns, spaces etc) ? I need to display this amount in a label.
View 5 RepliesI am trying to count all the rows on a datagrid after it has been populated from my DB. I have searched online on how to do this but nothing seems to work.[code]where test is my datasource it gets thrown into
View 1 RepliesI have an SQL database with a single table with several colunmns. I want to count how many times a certain number appears in one of the columns. E.g. I have the following:
A B C
8 4 6
0 9 3
1 4 6
4 7 1
I want to count the number of times 4 is used in column B. I have looked at using the following, but not sure if this is even the right approach:
Dim db as New MainTblDataSet
Dim BCount = Aggregate B In db.MainTbl Into Count(B.B = num)
where num=the number I am counting the instances of (4 in this case).
The hope is that BCount will equal 2, but it returns 0 every time.
How to count no of Words in A RichTextBox?
View 9 RepliesI am using a tableadapter to connect my project to an MS database. I need a a function which counts the number of rows in the table for something which I am doing. I have sucessfully used the count function to count the number of rows for my other tables, but when I tried to reuse it for another table, it wouldn't work. I get an error...
An unhandled exception of type 'System.ArgumentException' occurred in System.Data.dllAdditional information: Input string was not in a correct format.Couldn't store <AH25> in ProductCode Column. Expected type is Int32.
and this is the code which I used
Dim record As Integer = TAProduct.GetData.Rows
Do Until record = TAProduct.GetData().Count
' other codes
loop
It only seems to work if the first column is an integer datatype, which is the case for my other tables, but the table which I am currently dealing with using a string datatype. Is there another way to count the number of rows without using SQL statements or can I adapt my existing code in some way?
I have a datatable that stores information on employees. What i'm trying to do is use it to run a seniority list looping through the table using the current system date. The looping part i have no problem with, and the system date calculation also i know how to do. The problem call the date from the startDate column to do the calculation.
i have tried
dim sDate As date = "startdate"
but i get an error that it cannot be converted to date.
i made a tool which detects arrow keys .When i click up it shows the word up in text box when i click down arrow it shows down word vice versia.
My problem is i want to count the number of times i clickd an arrow and want to save it in text doc with time and date
I have a display system that I created in VS Studio 2005 that uses ini files for certain functions. Reading and writing to ini files is easy enough but what I just can't figure out is how to count the number of items under a particular ini section.
View 4 Repliesi am trying to count up to a number and add each number to a combo box. so for instance, the string value = 7. i want the combobox to count up to 7 in single numbers starting with 1
View 15 RepliesI have an application where event driven events are already detected. Each time an even is detected I increment a counter.I would like to add the following functionality:
1.) I would like to create a time stamp each time an event is detected and store them in some kind of data structure.
2.) I would like to count how many events are being stored (or in essence count how many events have occurred in the past 10 seconds, not once but continuously).
3.) I would then like to discard of any events older than 10 seconds note events are interrupt driven and can occur more frequently than once a second, but updating my count of how many events have occurred in the past 10 seconds can be done as infrequently as say once a second.
there are any nifty in-built .net methods that can essentially return either the number of occurrences of each element in an array, or simply return the modal value.
View 7 Replieshow to do cursor moving from one grid it effect to another grid.example Grid A and Grid B have the same number of rows. when I click current row on data grid A, the selected row on data Grid B also follow data grid A..
View 1 RepliesCurrently i try this code but[code]...
but i want to allow only a-z character and 0-9 number. not allow any symbol
How do I check to see if the first character of a string is a number in VB.NET? I know that the Java way of doing it is:
char c = string.charAt(0);
isDigit = (c >= '0' && c <= '9');
I'm using vb.net and a DGV to open a access DB. On load im filtering out everything except what was created on the current date. [code]...
View 1 RepliesAssuming that I am going to add new record. I use this function to generate the ID for the new record.
Public Function GetMax(ByVal strTable As String, ByVal strField As String) As Integer
Dim cmd1 As New SqlCommand
Dim conn As New SqlConnection(gStrConnection)
Dim no As Integer
Dim str1 As String
[Code] .....
It returns 1. How can I modify this to make it 20120001 wherein the first 4 number (2012) will depends on the year today.
My issue is that some websites only allow say 15 characters maximum to be used to create a user name where other sites do not. Currently I have one text box on the screen and a button, and a web browser that navigates to two sites.Site #1 has a cap of 15 characters max to create a user nameSite #2 doesn't have any maximum amount of characters to use.I am wanting to know how I can enter lets say a 20 character username into the text box and have the code set a max of 15 characters for site one and nothing for site 2. I was thinking that this could be done when passing the information from the text box to the text box on the screen with something like
Textbox1.Text.value.length= maximum 15
Site #2:
Textbox1.Text
[code].....
what is the vb.net equivalent to vb6 String(number,character?
View 3 Repliesi want to convert following number to character equivalent but without using any special character.
View 1 RepliesI'm scanning through all characters in a textbox. Then the program counts how many of each character is in the textbox. Here's the code which adds all characters to a list:
For each c as char in TxtBox
list.add(c)
Next
Everything's working fine, except this will also add returns to the list, which I don't want. I thought I could write like this:
If c <> chr(10) Then
list.add(c)
End If
How can I count the amount of times a character appears in a string?
The assignment is to create a program with 2 text boxes, label, and a button. We then need to type a phrase into the first text box, and a character in the second. Then click the button and then the label will display the output of how many times the character in the second text box appears in the first.
I have all the above setup except for how to display the amount of times the character appears in the first text box, here's a picture:
I have 10 lines of array that are first name space last name space zip code. All the zip codes start with different numbers. Is there a way to replace the #1 in the indexof below so that it searches for any number character instead?
'open file
inFile = IO.File.OpenText("Names.txt")
'process the loop instruct until end of file
intSubscript = 0
[code].....
I want to user to enter only numbers and characters in textbox i.e no special charaters.I don't want to use key press event of textbox.As i need same validation in gridview.
So i want to validate whole string.
count the number of times when a user enters a character followed by , and I want to count , number of times. So far here is what I have if you also know a little about the split function can you check to see if what I have is right?
Private Sub Strat0_LostFocus()
Dim q1 As New rdoQuery
Dim LO As Integer
[code]....
In my datagriedview i have 5 column called T,C,F,S and H.I want to specify in column C that the user must enter 3 digit. For column H the maximun value should be 2000 so user should not enter more than 2000.how i can specify this condition for my datagriedview column?
View 2 RepliesIn my datagriedview i have 5 column called T,C,F,S and H.
I want to specify in column C that the user must enter 3 digit. For column H the maximun value should be 2000 so user should not enter more than 2000.
how i can specify this condition for my datagriedview column?
How can I generate a 7-digit random number and special character string in a textbox on a button click event, in VB.Net?
View 2 RepliesMy homework assignment is to create a project where a user enters a password that must be at least 3 characters long with at least 1 number and 1 alphabet character. After that the password has to be encrypted so that vowels become X, numbers Z, and it reverses. For example, a password of CS2301 would be ZZZZSC. There's supposed to be Loops to extract 1 number/letter at a time and search for them in the string to validate, and I don't know what to do. The form itself has a Text Box to enter a password and a label to display the new one, and a Go button.
This is what my code looks like so far.
Option Strict On
Option Explicit On
Public Class Form1
[CODE]...