I have put datagridview on form. I have add one column and 7 rows. Beginning four row contain value "PASS" respectively and last three rows contain value "Fail" respectively. I have to count total fail values in a column in CellEndEdit Event.
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tell me how I count the number of times a specifc value appears in a column within a DataGridView?
View 2 RepliesI was wondering the best method or code to Sum\total a bunch of cell values of an unbound column in a datagrid to a textbox string. this request is 100% genuine...im not some student trying to get you guys to finish my project, this is purely for educational and personal information for myself. im new to vb.net.
View 2 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 am using visual basic 2008 amd creatomg a datagrodview format like below [code] Now I wnat to get total balance in total column after less discount in percentage with ENTER EVENT proceedure and get the whole total column balance in a textbox i.e Net BalanceTextBox. Please tell me how to calculate discount in percent % and get total in total column and also tell me how to move cursor in next cell instead of bottom row in datagridview.
View 2 RepliesI have 3 columns in a unbound datagridview, "length" "height" and "Total". Total = length x width and the final total in TextBox outside of the Grid. I found question simalar in this forum and tried the code but i am getting errors.The following is the code i am using
Public
Class Form1
Dim UnboundColumn[code]...
I have a program and I get time data from a sqldb and display it in a column in a listbox. What are the proper steps for adding the time as I iterate through the data in the column? I figure I will need to do some conversions on the time to be able to add it and display it as a total.
View 9 RepliesI have textboxes which is placed inside accordian (ajax control).In pageload event i have written the code to load values in textboxes. But onload event one error is coming as object not set to instance of a object. Values are not coming in textboxes.
Then i tried to initialize controls in textboxes .Then the error cleared. But
Values are not coming in textboxes. What may be the reason for this?
'search Male
Dim cmdTextName As String = "SELECT isnull(Count(Gender),0) as TotalMale FROM tblStudent WHERE (Gender = Male)"
Dim sqlcmdName As New SqlCommand(cmdTextName, New SqlConnection(GetConnection))
sqlcmdName.Connection.Open()
[code]....
Am trying to count the number of male in my table however when i try to run using this code it pops an error which is "invalid column name Male" what seems to be wrong with my statements?
I 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.
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.
In my DataGridView, I have several columns with check boxes that indicate whether the part has been bought or not. I want to add the summation of each column though to know how many of each parts have been bought by a single company. I have the count code working partially but I cannot get the correct number at all. Here is the code:
[Code]...
am trying to calculate the values in rows in column 6 based on values of column 5. Bellow is the the code I am using I get a run time error about the string not formatted properly
[Code]...
how I would go about getting the item count for a column in my mssql db.
View 3 RepliesI have a sql SELECT statement in vb.net. I have this line of code to calculate a specific percentage of the Net Total:ROUND(Invoices.NetT*'" + txtOnGoing.Text + "'/100,2) As Commission 'txtOnGoing is a text box which pre populates a certain number e.g '10'... this means 10% of the NetT column..The above code works fine, now I want to add the "Commission" Column and display the Total in a text box. Does anyone know how to do this? I know I can use the SUM operator but because the Commission column isnt a column that actually exists in the table I dont know how I could do this.
View 3 RepliesI have a bound datagridview in my code. I want to create a column to the right of each row that displays the sum of the values in the row.I've searched the net dilligently and have found nothing! Summarizing the columns is there, but not a row.
Oct Nov Dec Total
100 100 100 300
150 150 100 400
Etc....
I have a datagridview on a form and what I need to do is loop through the dgv and get a total of how many X's are in each individual column and then display the total in a Label. Here is the form and some information. I know how to get the sum of numbers in a column but not how to do this.
There are 28 columns Column Names are Day1, Day2, Day3 etc (so I know to use a for loop but can't figure it out) The total needs to go in the label at the bottom of each column,again they are Label28, Label29, Label30 right on up to Label56. I will continue working on it
I'm having some trouble firstly trying to calculate the total of a column in the database connected to my vb.net project. Then I want to divide that total by the number of items in a listbox. This is my code so far:
Private Sub btnavresult_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnavresult.Click
Dim sqlx As OleDbCommand = New OleDbCommand
[Code]......
I get an error saying "No value given for one or more required parameters." when I try to run my program on this line "Dim rdr As OleDbDataReader = sqlx.ExecuteReader()"
I learned about this query 2 days ago:-
SELECT SUM(DTotal) AS Monthly FROM bdailytotal
but how I'm going to view the total value of the summation? I had been searching for this but most of the answers I get is for PHP. Can someone show me how to assign that total value to a variable in VB.NET?
Or teach me how to assign that total value to another table.
I have 20 radiobuttonlists on a page. Each has 4 options with values 1, 2, 3 and 4.What I need to do is on submitting the form, get the total value of all the radiobuttonlists (eg 3+1+2+3+4...) divided by the total number that have actually been filled in (none of them are required fields so anything from 0 to 20 of them could have been filled in) - hence getting an average value.
View 1 RepliesI am having a issue with my app, I know it is going to be something easy that I am doing wrong, but I just can find what it is. I am to take a quantity of an item and then * by the price of the item to get the total. This works fine when I get the first values, but if I want to add to the total that I have with new values, well, thats were I am having issues.
Here is my button
Private Sub Btn_Add_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btn_Add.Click
'Declaring the instants of my class
Dim Sale As New BookSale
[CODE].............
And here is my class
Public Class BookSale
'Setting the vars so the can be used as calculation
Private dec_quantity As Decimal
Private dec_price As Decimal
[CODE]..................
i have a problem about adding up the sum of table in my listview, [code]after i input a value in the textbox1 it will give me the total amount in the listview items. the problem is i cannot sum up the table amount which i will be needing to proceed to another transactions.
View 1 RepliesI want to get the total (column) amount using Listview w/o database VB.NET
lstitems
Item Name | Unit Price | Quantity | Amount
---------------------------------------------
Sample1 | 100.00 | 1 | 100.00
Sample2 | 100.00 | 1 | 200.00
Sample3 | 100.00 | 1 | 200.00
Label or Textbox ----> Total 500.00
Protected Sub invokePagination(ByVal table As DataTable)
'CallPagination() As PagingControlDTO
If table.Rows.Count > 0 Then
Me.DataGridPaging1.Visible = True
[code].....
The code which is underlined is to be replaced.Instead of this I want to use column name to get the total count , since it contain the total count.Column Name is "TOTALROWCOUNT"
Dim oApp As New Excel.Application
Dim oWBa As Excel.Workbook
oWBa = oApp.Workbooks.Open(excelFile)
[code]....
Before I begin, want to say this is my first post and I am a newbie. My first time using VB. How can I add values in a listbox that were entered by a user to another textbox in total?For ExampleSay my code for now is this.
ListBox1.Items.Add(textBoxValue.Text)
Dim X As Double
X = textBoxValue.Text
[code].....
I have a datagrid adding items for selling. The total for each row is calculated on the price, qty and discount. This goes into rowTotal column. Below the grid, there are 2 textboxes, one for txtBoxVAT and txtBoxSumTotal. Now I want to add the column 'rowTotal' into txtBoxSumTotal. How to achieve this.kesk
View 2 RepliesI am trying to update my table reservation I am just trying to update only on column which is total amount but it is not updating.
Here is my code.
Dim a As Integer
a = MessageBox.Show("Are you sure you want to exit????", "ALI ENTERPRISES", MessageBoxButtons.YesNo, MessageBoxIcon.Information)
If a = vbYes Then
Me.Close()
[Code] .....
I don't know if this is the best way to do it or not but here goes.I have an access database and a datagridview and they link via a SELECT statement at runtime.I want to total one column named LNLMTS and display the result.I am looking at using SELECT Sum LNLMTS FROM tblProduction WHERE SO=@so AND DATE=@date
View 8 RepliesHow can I get the sum all the values a user enters into TextBox1 to display that sum into TextBox2.The user is going to enter one value one by one. The user enters '1' into TextBox1, therefore, TextBox2 should display '1'.If the user than enters '2' into TextBox1, TextBox2 should display '3'.If the user enters '2' into TextBox1, TextBox2 should display '5'.And so on.TextBox2 should only display one value at a time, not one after another.I am using double because I need decimal places.I have a ListBox1 where it displays all the values entered by the user in rows one by one, but I prefer not to use the ListBox1 to get the sum of all the values entered in TextBox1 and to have TextBox2 show that sum. Because in that ListBox1, I have few other things in there, like Strings, which will not allow the sum of all the values entered in TextBox1 to be calculated and displayed in TextBox2.Not sure if this matters or not, but I thought it might.So only need TextBox2 to have all the values entered in TextBox1.If 1 was entered in TextBox1, TextBox2 shows 1.Then 2 is entered in TextBox1, TextBox2 will show 3.
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