Addition Of 3*3 Matrix

Jul 18, 2012

i have some problem for developing the code for addtion of 3x3 matrix class the code which i have develop is given below. but this class is not executed in vb.net code. dont know whats getting wrong in it as m nt getting the required result. in correcting the code as m new in vb.net.

[Code]...

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Addition Of Odd Numbers / Addition Of Small Numbers

Feb 28, 2010

i need help how to add odd numbers that are in my 6 textboxes collection and to see the result to label1 and how to add the textboxes that have numbers less than number 5.

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Mar 8, 2010

I have a project where I want to have checked arithmetic by default, except for one performance sensitive spot. Unfortunately, VB.Net doesn't have an 'unchecked' block.Ideally the framework would have some sort of integer type with explicitly unchecked arithmetic, but I didn't find anything like that. I did find that expression trees have binary expressions for unchecked operations, but the delegate overhead cancels out the unchecked advantage (and then some).

Currently I'm converting the inputs to UInt64/Int64 before doing the arithmetic, then converting back (with a bitwise And to ensure in-range). It's about 50% slower than unchecked arithmetic (according to profiling).

Moving the arithmetic-sensitive part to a project with unchecked arithmetic might work, but it seems like overkill to give it an assembly all to itself.

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i am having problem in Addition and Same Numbers In Textboxes

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Jan 18, 2011

Bellow pls find the code in VB 2008. I must sum up the numbers in the xlistscorebox

Dim tot As Integer
Dim scoresentered As Integer
For index As Integer = 0 To Me.xListscoreBox.SelectedItems.Count - 1

[code].....

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Nov 5, 2010

Addition Of Two Textbox Values

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Feb 22, 2012

Alright I have my assignment to the bottom, and my code so far in CODE mark up.I'm trying to get a value in a textbox assigned to a variable (Price) add to a variable (Subtotal), clear out the textbox and loop around. I looked for hours in my book and google and couldn't find m

Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

[code].....

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Feb 6, 2012

i have this code in vb and i want to know how to make it to add decimal points

Dim a, b As Integer
a = CSng(TextBox1.Text)
b = CSng(TextBox2.Text)
Dim result As Single
result = a + b
Lb_sum.Text = result

for example if i add 4.2 + 4.4 its show 8 instaid of 8.6

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Feb 8, 2012

I am using Combobox in data grid view as one of my column type.I am populating this combobox from table in DB.

Now, I want to do is that I can be able to add text in that combobox cell and on clicking submit button on form, this text should get added to table in db.

When i load the form again, again in that combox cell it should display this text along with previous text . means, two items will now get displayed.

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I have 5 textboxes that the user will input numeric's into (but not all the textboxes may be filled at one time) How can I get the sum of "however many" textboxes have values in them, without getting an error about the txtboxes that have no values in them?

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I want to generate a matrix (7,4) with this output: (7lines and 4 columns) that has this structure(with this values)Column A1 and row B1 has 2 values (1 8 ), column A2 has 2 values (2 7 value in column A2) , column A3 has 3 6 value column A4 and row B1 has 4 5 value. And so on.How I can generate this matrix: [code] So my question is which condition to put to generate this matrix of this form.A cell A1,B1 contains two values (1 and 8 for example in cell B1).

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This is my matrix. I want to solve C,D and E

sample codes to solve C, D and E in VB.Net?

Answers are C=0.4857143, D=0.0000000 and E=-0.1428571 (manual calculation)

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Sep 23, 2009

i am currently doing a project on a marking program..I have to total up the marks for question B1 to C2 and compute the sum to 'Total' column.

Table name is 'Student'

Database name is 'Database1'

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Apr 27, 2012

I am using DataGirdView in my project.I have some queries listed below.

1. I want to add Rowheader' name like

Column 1||Column2
Row1
Row2

2. I want to fix the number of Row like just 2 Rows . And if I edit in datagrid or press enter after editing ,the automatic addition of the next row must be blocked.

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Double Data Type During Addition

Mar 21, 2010

Here is an issue that i am facing - VB6

[Code]....

The value of d3 is not coming to 301006308001004.5 but it is getting rounded off. Is there a way to fix this. When I use currency data type, the issue looks solved. However currency cannot hold a larger decimal number. the value of d2 can have more decimal value like 0.343324532553 .

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Sockets In .NET Logout Button Addition?

Dec 4, 2011

I have a problem with the code I will be posting down below, when I use the logout button & then I proceed to re-join & the server gets taken down the client crashes/closes, debug mode shows errors in general as the debug session closes out but it doesn't go to any lines of code or anything for me to find where the problem is happening at.

Now I know this isn't a server issue for sure, no bugs show up in the servers coding program at all & it shouldn't take the servers help for a client to disconnect properly between my app being closed & them using the logout button. It only bugs when the server goes down & only after having used the logout button since you've opened the application..

A first chance exception of type 'System.InvalidOperationException' occurred in System.Windows.Forms.dll

[Code]...

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how do i use pdfptable as a real table (A x B) instead of just (A x A)

declaring it this way gives me just one row:

Dim datatable As PdfPTable = New PdfPTable(4)

how can i declare it so that it has multiple rows and multiple columns?

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Feb 24, 2009

I want to know if there is function to know whether the printer you are printing on is a dot matrix?

Our official receipt is printed in a dot matrix and must not be printed on any other kind of printer.

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Jan 23, 2010

I have a matrix:

Module Procedimientos
Public Datos(200, 4) As String
Public Sub Inicio()[code]....

It is a Class made with the Add Windows Forms Menu.I have another Form where I added from the ToolBox the DataGridView Item.
Everything till now works like a charm, the problem comes when I try to load the matrix (previously posted) into the DataGrid. I search for the matrix via DataSource Button (from DataGrid's Properties) but I can't find it, it'll only show up the other forms. I don't know what I'm doing wrong.

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May 7, 2012

So I'm developing a minesweeper game and i've assigned the mines, but I've got to generate the numbers around them. I've already developed the code, but it doesnt seem to be working.It's important to refer that I'm using a DataGridView.Here's how my code looks like now:

Declaring my variables:

Public line As Integer
Public column As Integer
Public numbandeiras As Integer

[code].....

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Aug 9, 2010

I have a huge matrix that has million columns and thousands of rows in a plain text file. The file maybe have 50GB size.

I want to transite the matrix and save it to a new file.

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Run A Procedure Using An Incrementing Matrix?

Jun 20, 2009

I've been looking into this problem for a few days now and i can't find exactly the code that i want.I want to run a procedure using an incrementing matrix. If the Matrix that was used is correct then the correct matrix is shown.

the process is get first iteration process if incorrect repeat with next iteration correct end the issue is with the iterations and breaking out of them the matrix length, depth and iteration step can vary.

this is best shown in an example
length = 5
high = 3
low = 0
step 1

the iterations should look like

[Code]...

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Aug 9, 2009

i am using TVS-MSP-250 Champion printer,i did a billing project all wrks and prints perfectly,but my client ask me to print tamil quatotion at the bottom of the page how can i print tamil characters in dot matrix,i used font such as amutham,saiindra,etc all are true type font i also try a method print#1, chrw(&HAB) it display tamil in msgbox, because i set window msgbox font as saiindra, if i print by using txtbox such kind of characters are print,no option to change font in printer properties,the default font in dot matrix printer is roman

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Apr 8, 2009

here i am again asking for you assistance. what im trying to acheive is a datagriview that behaves like a matrix.ie. i have the following table

ProductName, ProductRegion, ProductType
Test1, RegionTest1, TypeTest1
Test2, RegionTest1, TypeTest2
Test3, RegionTest1, TypeTest3
Test4, RegionTest2, TypeTest1
Test5, RegionTest2, TypeTest2

what i need in output is something like the following:

<...........> RegionTest1 RegionTest2
TypeTest1 Test1 Test4
TypeTest2 Test2 Test5
TypeTest3 Test3

p.s. i would also need to be able to save it back to the database p.p.s cross posted on "vb dot net forums". but no replies in a while so im posting the same question on this forum.

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Apr 24, 2011

How do i make a ListBox with the addition of each item, the item be removed after 4 seconds? Added time and number of items is unknown. Other parts of the job application should not be hampered. I know that thread should I use, but I do not know.

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Apr 8, 2012

I have an ACE OleDb connection to an accdb file that�s working well but I�m mystified by something I recently discovered when using named parameters. Order of adding of parameters overrides the parameter names. I see in the MSDN that is states when in "Text" mode named parameters is not supported. My testing has proven this to be the case. The example below puts "Value 2 in Field1 and "Value 1" in Field2. In fact I could change @value2 to @blahblah and it works.

Dim command As New OleDb.OleDbCommand("INSERT INTO Results(Field1,Field2) Values(@value1,@value2)", con)
command.Parameters.AddWithValue("@value2, "Value 2")
command.Parameters.AddWithValue("@value1", "Value 1")

what is text mode and how do I change it and what other types are there? According to John McIlhinney�s earlier explanation things like date variables are added in a binary fashion including support for DBNull. So this is not "Text" so how am I sending binary data to a Db in Text mode? I�m just not getting why it supports names when it ignores them. Is it simply the case that there is no way to add parameters out of order in my case?If adding out of order is impossible should my command use some other syntax? I see other syntax that just uses question marks in the command dim for the Values section. EG "Values(?,?)".

Is there a way of adding parameters without names?In general I�d love to hear someone to explain this so I can understand the inner workings here a little better and have a little more confidence in what I�m doing here. I can fix my code to work but I feel like an idiot using parameter names that are ignored. I just know I�m doing something wrong even if it works.

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How may i retrieve the total number of records from a table via a SQL select, store it in a variable & in turn, add '1' to it @ a textbox to simulate the addition of a new record?[code]...

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i am currently making a maths game but i have run in to trouble trying to do the addition and subtraction side of the game. This is my current class file for my multiplication

Public Class Class2
Private Property question_gameplay_label As String
Private Property correctAnswer As Integer

[code]....

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Oct 14, 2011

I got a problem with my calculation .The problem is after addition and subtraction calculation I only get result or answer 0, .There are not a correct answer. I try to change the datatype of the variable to decimal and double but answer is still 0.

Here is my coding.
Private Sub btnadditionprice_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnadditionprice.Click
Dim sum6, sum9 As Decimal
sum6 = Val(Me.ItemPriceTextBox.Text) + Val(Me.txtadditionprice.Text)
[Code] .....
Answer which got is 0.000

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Feb 28, 2010

With option strict on i have errors addition. I want how to make the addition of:

1. all the odd numbers on a collection of 5 textboxes and see result to label1

2. all the the even numbers to label2

3.all numbers smaller than number 5 to label 3

4. all numbers greater than number 5 to label 4

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I am trying to develop this application Using Visual Basic 2008. I hope I am posting my question in the correct forum. (Still confused about the difference between VB.net and Visual Basic) Anyways....I am trying to assign the data from my datagridview to a matrix. I donot know if this is possible in VB2008. The data in my datagridview is dynamic and I am trying to assign 2 matrices to my data.[code]...

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May 24, 2010

Here's the code i'm using to rotate:

Dim m As New System.Drawing.Drawing2D.Matrix
Dim size = image.Size
m.RotateAt(degreeAngle, New PointF(CSng(size.Width / 2), CSng(size.Height / 2)))
Dim temp As New Bitmap(600, 600, Imaging.PixelFormat.Format32bppPArgb)
Dim g As Graphics = Graphics.FromImage(temp)
g.Transform = m
g.DrawImage(image, 0, 0)

(1) Disposals removed for brevity.

(2) I test the code with a 200 x 200 rectangle.

(3) Size 600,600 it just an arbitrary large value that I know will fit the right and bottom sides of the rotated image for testing purposes.

(4) I know, with this code, the top and left edges will be clipped because I'm not transforming the orgin after the rotate.

The problem only occurs at certain angles:

(1) At 90, the right hand edge disappears completely.
(2) At 180, the right and bottom edges are there, but very faded.
(3) At 270, the bottom edge disappears completely.

Is this a known bug?If I manually rotate the corners an draw the image by specifying an output rectangle, I don't get the same problem - though it is slightly slower than using RotateAt.

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[Code]...

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[Code].....

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I am writing a small aspx web application that takes in forum information after validation and then opens a database connection and populates the proper columns with data.note: The database is a .sdf file created in web matrix My issue is that even with: Import Namespace="System.Data.OleDb" on the page I am getting:
Type 'OledbConnetion' is not defined. I am extremly new to VB, I am coming from java and honestly I do not have all year to read vb code and take classes and read books. I need to finish this app for a client so I am kind of rushed.

[Code]...

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a b c d e
f g h i j
k l m n o
p r s t u
v w x y z

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The line of code:

Private Sub blah blah blah...

If txtnumber1.Text = False Then MsgBox("Please Input Valid Value")

End Sub

I however have not been able to make it work.

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Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
Dim str As String
Dim devtype As Int32

[Code].....

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