Add/subtract/divide/multiply Certain Columns And Place The Information Into Other Columns?
Nov 30, 2010
My goal is to connect to my database either manually or using an sqladapater, and get information from two of my databases on sql server 2005. Then I want to take this information and on run-time begin to add/subtract/divide/multiply certain columns and place the information into other columns. I can do this in queries, however, I want to do it on run-time what is the best way to achieve this.I had some of this working, but I just want to start fresh and see how you would go about doing this.
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Sep 15, 2009
How would I get a button to divide and multiply?
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Apr 18, 2012
I'm in the process of converting an app to vb.net 2008. I was using an msflexgrid previously. I am not using a database to fill the datagrid but as the application recieves data via a tcp connection I place the data into the datagrid's columns. The problem I am having is with column widths. I found this code by doing a search on here and added to my form.
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Jan 11, 2011
I have built a small VB.NET Calculator but whenever I add, subtract or multiply by 0 the answer is always 0. Here is my code:
Spoiler
Option Explicit On
Public Class Calculator2
[Code]....
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Oct 26, 2011
I'm using VB.net 2005. I have working programs that I populate DataGridViews with something like the following:
[Code]...
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Jun 29, 2011
I have the below Linq query that is returning the data but I need to aggregate the columns to group on the Period and Sum the Count columns. How do I go about doing this?
LINQ
from t In tblTimes
join h In tblEngineeringDashboard_CADMachinesCounts on t.ID Equals h.TimeID
Order By t.Period
[code].....
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Oct 15, 2009
I am using the following code to alter an table imported from an Excel spreadsheet
Dim SQL As String = "ALTER TABLE receipts ADD payee integer, account integer, category integer, reconciled boolean"
Dim dataread As New OleDb.OleDbCommand()
dataread.Connection = Connection1
[code]....
Both ExecuteNonQuery() actions yields the exception message {"Syntax error in field definition."}The error message does not happen with the first if the boolean column is not there (I tried Tes/No as a definition - but that also failed.The second query to modify the ID column from autonumber to integer I assume fails because it is a Primary KeyHas?
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May 23, 2011
Imagine the following scene: I have one table which have tree columns (ID, Number, Name).
A Select query result on this:
code:
Now, the user deletes the Number 3 and 4. So, now the Select query is going to be:
code:
And I want to have:
code:
How can I organize the column?
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Feb 13, 2011
Is there a way to size the columns so that all the information in the cell is visible. the database is in vb 2010 express
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Feb 21, 2011
I've the following code which successfully makes an average for all the columns from a table. What I need to do though is ignore certain columns in this equation.
Dim totalNumber as Double = 0
Dim count as Integer = 0
For x = 0 To xyz123.Tables(0).Columns.Count - 1
[Code]....
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Feb 28, 2010
Averaging columns in a table - ignoring certain columns
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Feb 18, 2010
What should I use and how to use something that functions like a label box but can handle several columns and columns? Something that looks like this. [code] Name | Age | Birthday are headers and the letters are variables
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Jun 18, 2012
im using listview not sql or other cr..p (Plain)I would like to get a guide to help me with all features of listview im new in dat area?But the most important thing is i want to know how can i load a file into a listview which has columns and each column has its information
Example - < Columns
Website Name
Website Location
Website Description
[code]....
so how can export it and load it ?and how can one add records and remove if using tht type of manner?
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Jun 15, 2009
Is there a way to programmatically send information from a text box into specific columns in a DataGridView? I tried
vb.net
Column1.Text = TextBox1.Text
and it obviously does not work.
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Oct 6, 2011
I have a datatable property called prpParametersTable in a class called clsBatch. I have a procedure that sets a datatable variable called dtP equal to prpParametersTable at the beginning of the procedure. I then add three new columns to dtP.Here is my problem. When I add the three new columns to dtP my original table prpParametersTable also gets those columns added to it, why? I only want to add the three columns to dtP and not prpParametersTable. How can I do that?
Private Function prvfnc_InsertBatchParameters(ByRef cnn As SqlConnection, ByRef trans As SqlTransaction) As String
' set new columns that have BatchID, Insert DateTime, and UserID for the SQLBulkCopy method below
Dim clm As DataColumn
Dim dtP As DataTable = clsBatch.prpParametersTable
[code]....
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Feb 23, 2010
Is there a built-in way to multiply every member of an array by some number in-place?
Example:
Dim volts () as Double = {1.243, 0.534, 5.343, 2.223, 4.334}
Dim millivolts (4) as Double = volts.MultiplyEachBy(1000) 'something like this
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Feb 15, 2009
I would like to know if it is possible if the columns of the listview can be resized automatically based on the information in the listview?
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Dec 10, 2011
Textbox1 will have the number 0x08800000, It may also be more than one line, so for example;
0x08800000 0x02313823
0x08800000 0xDEADBEEF
0x08800000 0xBEEFBEEF
etc etc
I only need to subtract 08800000 from whats in bold, the rest will stay the same. The value in textbox1 will always begin with 0x0880xxxx I need to convert that to 0x00000000 so basically I need to subtract 08800000 from textbox1 and place the output in textbox2.
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Aug 18, 2011
I have Dataset ds filled up with values Until now I was displaying values in GridView. Now I want that all the rows should be columns and columns should be rows.I have 2 options: Either 1 I can directly convert grid to columns and display it, or 2 I can convert the GridView to html and then write loops to convert. I was trying the 2nd option but I cant figure out how I should do that.[code]With this code I am still getting same as GridView. Please help me for converting rows to columns and vice versa.
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Apr 27, 2009
We are making a report (2005) of a certain time duration, for example one month. In the stored procedure we made, two parameters are given; start-date and end-date. In the report we want to place these two dates, but we can only put database fields in the report. Does someone has any idea how to put these static information into the report?
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May 5, 2010
I am trying to place a datagridview's row information (each cell) into a list.
I've tried this:
Dim dgvRow As DataGridViewRow=myFrm.myDGV.Rows(index)
and it returns the count of my cells in the row, so I know it's getting the right row but how would I get the info from each of those cells and place them in a list?
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Dec 12, 2010
I have a forum with three text boxes and one button. I need to place various lines of text into textbox1 from a list of information.The list contains hash codes and user ID and various ofter pieces of information without spaces or punctuation. Most of the information I don't need. However, I do need the first 25-30 characters and last 25-30 characters from each text.
Lets say this is the text:
Simmon_unit32=sub4g36ff&product= shipment29664KL49Loc% 6679KM94
I need to place the above line of text into textbox1 (this I'm doing through cut and past, so not a problem). Then, click button1 and have everything before "&product=" display in textbox2 and everything after "Loc%" display in textbox3. The line of text will usually not be the same number of characters. There may be 10 characters before and after those words of 50 characters before and after those two words. So, how do I create a substring or loop (or something) that will read the line of text and display what I need in textbox1 and textbox2, regardless of the amount of characters in the line of text?
[edit]Unfortunately there are multiple & and % signs in the texts. In fact, there will most likely be an & sign somewhere before "&product=". However, "&product=" only shows up once. As far as the % sign goes. There will be 3 or 4 of them in the text. To make matters more difficult, "Loc%" also shows up multiple times in the text. But, I only need the information that displays after the very last % sign to appear in textbox3, if that helps.I'm using visual basic 2008, in a Windows forms Application.
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Jan 15, 2012
I have a CheckedListBox that will be used to choose what columns they want to select from a database. Is it at all possible to display it in the format of [Table Name].[Column Name]?So far I have this:
con.Open()
theQuery.Connection = con
theQuery.CommandText = strColumns
theAdapter.SelectCommand = theQuery
[code]....
I tried adding another clbFields.DisplayMember, but this obviously just overwrites the table name with the column name. I also tried doing:
clbFields.DisplayMember = "Table_Name" & "." & "Column_Name"
but that didn't work either.I know it's not exactly life threatening if the user can only see the column name, but it'd be nice to be able to see the table name in case of any duplications?
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Jan 11, 2012
I have some data and would like to add certain columns into a list. So if my data is
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Although the code works, im wondering how i could relate the director to the movie with the two list types i have?
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Nov 26, 2010
i have a datagridview table ("Bookingen") that is bound to an acces datatable
this table ("Bookingen") has columns
an i also have another form that alows people to add info like a registerform
what i would like is that when adding the info by button click
a column with the name of the person from registerform displayes in datagridview ("booking")
this my code so far
Public Class nieuw_personeel_invoer_code_
Private stroledb As String = "SELECT* FROM Loginnummer"
Private strconnection As String = "provider= Microsoft.ACE.OLEDB.12.0; Data Source=D:clifs project21.accdb; persist security Info=false;"
[Code].....
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Feb 19, 2010
I'm having problems with adding columns to listview. [code]....
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May 24, 2012
How can i add Columns to Treeview so that first column should be as tree and rest are like listview or Listbox.
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Apr 8, 2011
How can I get a sum for all the columns in a datatable? Say I had the following table. How can I calculate the "total" row? It should be easy to add total row to a datatable.
Columns hits uniques sigups, etc...
Rows
1 12 1 23
2 1 0 5
[Code].....
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Feb 19, 2009
Textboxes are arranged in a 5x5 matrix and each text box is only restricted to either a "1" or "0" input. I need help in the code that will count all 1's in each row and column. Since this is a 5x5 arrangement, there are 5 rows and 5 columns each. I am actually making a simulation of a VRC/LRC program. There will be 2 buttons namely "Even/Odd Parity". If user presses Even parity and the number of 1's in that specific row/column is Even, the result will be a 0,If odd the result is 1. There is a result textbox at the end of each row/column.
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Jun 22, 2010
is there an easy way to make the size of a datagridview expand dynamically (like say it is not long enough to display all the data it will grow in width), or do i have to implement this functionality manually?
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