SUMIF Calculation (similar To Excel) In Datagridview

Mar 2, 2010

I have written a code that performs calculation similar to SUMIF function used in excel. My data is in a datagridview and is all dynamic. My data is in the following format

X1 X2 Yj
1 1 11
1 2 12
2 1 13

[Code].....

I am getting a PE value for every cell in the code. How can I modify my code to get the results above. Kindly guide me through it, I know I am probably missing a minute detail somewhere but I am really struggling with this.

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I am trying to essentially convert an Excel spreadsheet into a Windows Form. On the first worksheet I have setup an IF statement to work as a search function =IF(C10="","",VLOOKUP(C10,'Price List'!$A$2:$D$40008,2,FALSE)) to read a price list on a separate worksheet. It works by taking a partnumber then puts the description in the next column (description column) and then the price in the "price each" column then finally totalling the row based of the quantity selected (see below).[code]...

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2
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[Code].....

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Here's my codes.

VB.net
Public Partial Class MainForm
Public Sub New()

[Code].....

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[Code]...

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this is my coding
Dim adult As Double
Dim child As Double
myconnection = New OleDb.OleDbConnection(myconnectionstring)

[Code]....

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Here's the code that I'm experimenting:

vb.net
Private Sub DataGridView1_RowLeave(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.RowLeave
Dim i As Integer
Dim intTotal As Integer = 0
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[Code]...

So, basically it should sum up certain columns when the user enters numbers into it and then display it in the last column.

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[Code]...

Failure is not an option! But sometime you need to look at those option.

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[Code]...

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Dim xlApp As Microsoft.Office.Interop.Excel.Application
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[code]....

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[Code]...

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[code].....

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I have also toyed with going from excel into a dataset (using the same wasteful method), and as expected it takes about the same time to load the data. Maybe use the XML from the Excel file?

EDIT:

Some Additional Information:

This is a WinForms application and the user will be picking and loading the excel file at run-time.

EDIT

The Return of Some Additional Information:

The Excel file is located on the user's pc. The general assumption is that they will be loading different files each time they use the application. [not sure if this helps, but might be good to know :)]

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Dim rowsTotal, colsTotal As Short

[code].....

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I am getting

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ON
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[Code].....

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'Save the workbook and quit Excel.
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[Code].....

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[Code]...

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[Code]...

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Imports System.Data
Imports System.Data.SqlClient

[Code]....

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In point form:

User starts program

program builds datatable

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user defines the data they want to see

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[code]....

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Private
Sub
Button1_Click(ByVal

[code]....

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[code].....

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Dim sConnectionString As String
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[code].....

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StaffNum
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DOB
Notes
Picture
FileName

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[Code] .....

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