Find Out The Total Number Of Rows In A Database Through Datareader?
Feb 18, 2009how to find out the total number of rows in a database through datareader
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Database - Find Average Of A Specific Number Of Rows/columns In Datatable And Store To Array?
Jun 21, 2012I am trying to program a noise reduction algorithm that works with a set of datapoints in a VB.NET DataTable after being helped with my other question. Basically, I want to take two integers, a coordinate value (yCoord for example) and a threshold smoothing value (NoiseThresh), and take the average of the values in the range of (yCoord - NoiseThresh, yCoord + NoiseThresh) and store that number into an array. I'd repeat that process for each column (in this example) and end up with a one-dimensional array of average values. My questions are:
1) Did anything I just say make any sense ;), and
2) Can anyone help me with the code? I've got very little experience working with databases.
[Code]...
Get Total Number Of Rows And Column From Excel?
May 24, 2012Dim oApp As New Excel.Application
Dim oWBa As Excel.Workbook
oWBa = oApp.Workbooks.Open(excelFile)
[code]....
GridControl - How To Get Total Number Of Master And Grouped Rows
Jan 25, 2012I found out how to keep track of the currently expanded grouped rows by using 2 events:
- gridview.GroupRowExpanded
- gridview.GroupRowCollapsed
Where I increase or decrement an integer that keeps track of how many group rows are currently expanded. I am now tackling the problem of what to do if the user expands or collapses all of the group rows. I currently know when this is done by checking the e.RowHandle. Any way to find the total number of groups rows currently in the GridView (something like rowcount for normal rows) so I know how many to set the tracking integer to.
For Example: If my current count is 2 and the total number of groups are 15 then when the Expand All is fired the current count is set to 15 rather than 3.
Find The Number Of Expanded / Collapsed Master Rows And Grouped Rows In A DevExpress GridView?
Jan 18, 2012I am currently using DevExpress 10.2 within Visual Studio 2010. In a previous question I was trying to print the current user view of a DevExpress GridControl with the user's choice of expanded or collapsed master rows and/or group sections. I was told this was not possible at this time. I have now decided to use the following code:
[Code]...
Find Total Number Of Warnings In Project?
Aug 15, 2011I've just converted a project from .net 1.1 to 3.5, and I'm being given loads of warnings in the error list. The program compiles and runs ok, but I think I should probably try to at least reduce this large number of warnings.The trouble is that the error list only tells me about the first 102 warnings. Even when I fix one, the number stays at 102. So I have absolutely no idea how many warnings there actually are. If there are 150, I'd like to get rid of them. But if there are 10,000, I don't have the time to fix them all.Is there a way to see the actual total number of warnings?
View 2 RepliesIDE :: Display The Total Number Of Record In A Table From A Database?
Dec 1, 2009I have a table from a database and i need to display the total number of record and display it in a label.i already have binding navigator but i will not use to display the total number of record in that table. and i will also make that binding navigator invisible.
View 2 RepliesCounting The Number Of Rows In A Database?
Apr 30, 2009I 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?
How To Detect Number Of Rows In SQL Database
Sep 12, 2009I am currently having trouble detecting the number of rows in the table in sql database. I have one column as auto increment, and one column that will show the blkname. But everytime I delete off one row, the program cannot run saying that there is no row at position "up to the latest number". Then, when I try to insert back the row again, the program also gives me the same error. I think the program probably cannot detect the number of rows correctly as it cannot like detect if there is 5 rows in the database and if you delete one row, it will give me the error. The above method is the same if I used the auto increament column and without.
The code that I have wrote so far is :
'AUTOINCREMENT
Dim n As Integer
Dim inc As Integer
Dim numbers() As Integer
Dim StartFrom As Integer
Dim EndAt As Integer
Dim MaxRows As Integer
MaxRows = ds2.Tables("CustDetail").Rows.Count
[Code] .....
Getting Number Of Rows In Table To Display In Database
Aug 23, 2009Any method that can effectively get the total number of rows that is StartRows to EndRows in a database table and then get the corresponding data from that row as currently I am having difficulty in retrieving out the correct row of data to the column that I am comparing. It will always get the first row of data regardless of which row I put in the handphone number which I'm comparing to. The codes below is the one which I am currently using now to detect the maxrows in the database and also to retrieve the corresponding information.
MaxRows = ds2.Tables("CustDetail").Rows.Count
MaxRows = MaxRows - 1
Dim numbers() As Integer
Dim EndAt As Integer
inc = 0
[Code] .....
I used a msgbox(n) to see the number of rows in the database but it displays only one where I have two rows in my database. The for loop is the one which will detect the number of maxrows and also retrieve out the corresponding details. But apparently this is not the appropriate way.
Find Last Rows Each Machine_id In Mysql Database With Program?
Jun 10, 2011[code]...Find last rows each machine_id in mysql database with program?
View 1 RepliesDatareader To Select Three Rows At A Time?
Jun 5, 2011Am currently creating an interactive dating sms service using vb.net.but when i get to the point for user to find requested matching records,am only able to get the first 3 records. i want it to be able to move to the next 3 and the following 3 and so forth until end of requested records each time the user sends 'next'.am using a 'do loop while' and a datareader but its not working how i want,below is the code:
ElseIf TextSend.Text.Contains("next") Or TextSend.Text.Contains("NEXT") Or TextSend.Text.Contains("Next") Then
If TextFrom.Text = "" Or TextTo.Text = "" Then
[Code].....
Find " Total, Avg, Max, Min" #..but "0" Returns For The Lowest Number?
Nov 6, 2011Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDisplay.Click
Dim numberFile As StreamReader
Dim intCount As Integer
Dim decTotal As Decimal
Dim decAvg As Decimal
[code]....
0 value returns for the Lowest number..everything else returns fine...
Get Number Of Row Returned By DataReader?
Jan 23, 2006I have been playing around with datareader for a little while, and I can't figure out how to get the number of row returned? [code]...
View 7 RepliesGet The Total Of Rows In A Textbox?
Jan 3, 2012I want to get the total of ROWS IN A TEXTBOX I MEAN LIKE THIS
quantity price subtotal
10 * 10 100
15 * 1 15
8 * 10 80
this is a exam.
so the total OF ( 100+ 15+ 80 = 195) To be shown
in the texTbox named" TOTAL " and so .with the other rows till unlimited if is possible
[code]....
Counting Total Rows On A Datagrid
May 10, 2011I 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 RepliesVS 2008 - Lock Grid Rows To The Number Of Rows In The Data Table?
Jul 27, 2010when populating a data grid i keep getting a redundant row in the bottom. is there a way to lock grid rows to the number of rows in the data table?
View 1 RepliesCount The Number Of Affected Rows And Display The Number In A Messagebox?
Jan 8, 2012how do i count the number of rows that are affected when I updated a table, and display the number of affected rows in a message box ??
here is my code for updating the table ...
For Each row As DataGridViewRow In DataGridView1.Rows
req = row.Cells(Column1.Name).Value
If row.Cells("Column1").Value = True Then
[Code].....
How To Find Sum To Total Item In Listbox
Dec 29, 2010how to find sum to total item in listbox in vb.net
View 1 RepliesGet The Total Of Number Into A Textbox?
Mar 21, 2010Heres my code:
Dim Subject As String
Subject = InputBox("How many")
Dim i As Integer
Dim num As Integer
[code]....
So how do I get the total of num into a textbox? If I type in 3 for "Subject = InputBox("How many")" then I get 3 "num = Val(InputBox("This many"))". Only the last number entered goes into the textbox and they don't add up to make a total.
Get Total Number Of Databases?
Oct 5, 2010how to get total number of databases available in SQL Server database in Combo box and display total number of tables in that database in ListView
View 6 RepliesHow To Get Total Number Of Databases
Jun 24, 2011How to get total number of databases available in SQL Server database in Combo box and display total number of tables in that database in ListView.
View 1 RepliesUse TypedDataTable.Rows.Find To Find Row Which Has Composite Key?
Jan 7, 2012I have a TypedDataTable called CamerasDT which has a composite Primary Key of GroupId and CameraId. I want to use TypedDataTable.Rows.Find(key as object) to return a specific row by GroupId and CameraId. I don't seem to be able to find a way to send primary key to the find function.
View 1 RepliesAdd Two Line One Line Is Find The Total Of Each Colums In The Last Row And To Find The Grandtotal?
May 1, 2011I am suppose to only Find the total of each column in the last row. Find the grand total in the last cell (the bottom right corner)Ok i have tried to do the grandtotal but i am not getting what she wants done I have also tried to reverse the arrays but that was wrong to. I am only suppose to add two line one line is find the total of each colums in the last row and to find the grandtotal.
Module Module1
Sub Main()
Dim sum(5, 4) As Integer
Dim row, col As Integer
[code]....
VS 2010 : Create Multi-dimensional Array From Datareader From Datareader?
Feb 20, 2012I have an SQL statement like:
SELECT FNAME, LNAME, CITY from EMPLOYEE
How do I create a multi-dimensional array from a datareader which should store values like:
John, Doe, LA
Mike, Johnson, PASADENA
Freddy, Kruger, Long Beach
Find Total Of Digits From Textbox To Listbox?
Sep 13, 2010This code bellow to find total of digits from textboxs to listbox.This code don't care about how many textboxs on the form.I take this code from Cazypennie..Great code.My question is..I want to change that code from many textboxs to only one textbox MultiLine having 30 Lines of digits to count and appear to listbox.
Option Strict Off
Public Class Form1
Dim BoxValueCollection As New Collection[code].......
Find The Total Row Count Of Datagrid Using Column Name?
Apr 27, 2012Protected 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"
Find Total Time In Crystal Report?
Sep 16, 2009I created one crystal report in that i print time for each user. finally i want to calculate total time. so wat should i do to calculate total time. i tried with sum method......
View 1 RepliesTotal Number For How Many Pairs Of The Same Numbers Are?
Feb 11, 2010i want to know the total number only of how many pairs of the same numbers are in mytextboxes example
the number 888822
this has
1 first with second digit 1 pair
[code].....
Find Total Days Between Two Date Controls Selection
Jun 30, 2012Protected Sub Calendar2_Selectionchanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles Calendar2.Selectionchanged
Dim myDate1 As String = ""
[Code].....
Have to find total days from two date controls after selecting dates in two controls it should print total days by calculating after immediate selection of second date control