I want to be able to get the table structure / design / column information from an access database. I have created a post in the Database/Access section with no luck, here, but I am wondering if I could achieve this through vb (2008 express edition) rather than the access sql query itself. My overall goal is to compare one DB structure with another, an integrity check if you will.
View 5 RepliesOne Possible (working) Solution:
Private Sub ReadXMLAttributes(ByVal oXML As String)
ReadXMLAttributes(oXML, "mso-infoPathSolution")
End Sub
Private Sub ReadXMLAttributes(ByVal oXML As String, ByVal oTagName As String)
Try
[Code]...
Is it possible to do the following?
A user is prompt to enter a 3 digit code followed by a single letter, like this: 000A
is it possible to limit the input to the textbox to 4 characters? and is it also possible to create a function which detects which letter is at the end of the input so that it can put the data in the right place?
For example, if i have three folders, A folder, B Folder and C folder, can I create something to detect the last letter of the users input and based on that letter the input goes into the correct folder?
I am connecting my VB application to Oracle Database. I need to configure the Data Source in the app.config.ng know which section do I define my UID, PWD and DSN and what functions do I use to read this information. Can I also write back this information through the application.
View 1 RepliesThis project is based on a MUD, or at least originates from playing them. I have an ascii map where each character represents a type of terrain. I have found code for reading one line at a time, but I need to not only dictate which line to be read, but how many characters in to the line to read. Basically trying to make a grid/coordinate system, where I can tell it my location is 4, 7 and the program will read the fourth line, seventh character.
View 3 RepliesVB GridView control will not allow code in the vb code file to access a data column that has its visible property set to false. When it is set to true, the data column can be accessed with no problem. Any suggestions as to how to correct this? I have looked through the documentation, text books, and I have not found anything that gave me any clue as to what the problem could be. I thought that the property was just applied to the column, not that it would remove the column from being accessible.
[Code]...
i tried creating a dataset using the myodbc driver 5.1 (which im sure is correctly typed in because that is the exact same connection string i used for data manipulation within my app.now, im stuck. i cannot generate any reports because the dataset i created can not return any field information w/c is confusing because it displays the names of the tables from the database. is there any way i can import all the data i need to my reports programatically??
View 3 RepliesI have a dataset with a number of data columns, due to sizing issues I've updated a number of the varchar columns from say VARCHAR(20) to VARCHAR(50).I'd like the DataTable to automatically grab the new column information, is this possible? I'd rather not go through each column in the table and update the length.
View 1 RepliesI have filled a listbox with a column of information from my sql database
Private Sub GetClients() Dim sqlCom As SqlCommand = New SqlCommand("select emailaddress from register where paymentreceived = 'No'", sqlCon) sqlCon.Open() sqlAdapter = New SqlDataAdapter(sqlCom) sqlAdapter.Fill(sqlDS, "register") dr = sqlCom.ExecuteReader If dr.HasRows Then For Each rec As Common.DbDataRecord In dr alRows.Add(rec) Next ListBox1.DataSource = alRows ListBox1.DisplayMember = "emailaddress" End If sqlCon.Close() End Sub
But now when i try to loop through the rows of the listbox
[Code]...
txtMsg.Text = "Message from " & e.MSISDN & " . Message - " & e.TextMessage &ControlChars.CrLfand i want to change it to insert into a listview instead.Eg inserting the e.MSISDN information into a FROM column of the listview.
View 2 RepliesI have a fair bit of experience with VB.NET and C# (In this case I chose VB.NET, blame my laziness), but I do most of my professional work using PHP. I have no experience what so ever in using any database with VB.NET let alone MySQL.Just FYI, at the moment I am only trying to Query the database to gather the information required to activate. The Activation wizard and algorithm building (which is finished anyway), and everything else will come soon. I chose the MySQL database because I have experience with it, and it seems the best option for remote usage.The whole idea already works in PHP, I'm just have major issues moving it accross into VB.NET (Using the MySQL Connector.NET);I understand the basics, and all I need to know how to do is Count Rows and gain access to the other information in a row based on provoided information (in PHP, through mysql_ result)
So, here goes nothing, this is the Query code I am using in PHP to complete the job I want to do in VB.NET. [code] As you can see, I basically need to get the PHP code into VB.NET to fit into the 'btnQueryDB.Click' Command in VB.NET. By Equivalent, the Product ID in VB.NET will come from 'txtPID' and similar, Serial Number will come from txtSNUM. Once counted to be 1, the Activation Code and Status will be fed into 2 other text boxes in the form. (acCode, and acStatus).
I'm trying to develop an app to import a spreadsheet into an Access 97 database. I'm using Visual Studio 08. I'm stuck on the first step! I'm trying to use the Data Source Configuration Wizard to connect to the database, and when I get to the point where I choose which tables to add, I get the following error:
<COPYtblMHPuse>
Could not get column information for database object named 'COPYtblMHPuse' This is for any table I try to add.
in row or column..particular(one cell) should edit and change the information...and save to database...
View 2 Repliesi m working on a project on vb.net with access database...and i need a code for separating the information from my complete package by following some kind of search,
1. for example if we type a word "publish" in a textbox and then click on a button...then it should display all the rows and columns containing the word "publish" in the grid view.
2.i also need a code for selecting the information from a particular column based on the key(or keyword) provided by the user
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?
I have a column ("Notes") in a sqlexpress database as nvarchar(1000). It will basically hold notes. It is pulled froma richtextbox control.[code]...
View 2 RepliesI have never read from an excel file in VB.NET before so sorry if anything is off.I am downloading an .csv file from a vendors ftp service that has 8 columns ( style # - mfr.item # - description - metal type - availability - center weight - total weight - retail value )I am trying to retrieve all data in the rows bellow style # and retail valuethere are roughly 4,649 rowsI am not sure how to do this.
I load the excel file using the microsoft.office.interop.excel:
Dim eApp As excel.Application
Dim eBook As excel.Workbook
[code]....
i am using data grid and i want to update it when user change i but the fallowing command in button to save update but it did not work and it give error massage
Dim builder As OleDbCommandBuilder = New OleDbCommandBuilder(DataAdapter1)
Dim CmdB As New OleDb.OleDbCommandBuilder(DataAdapter1)
DataAdapter1.Update(DataSet1, "Section")
the error messge (Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information.)
I have a table Personal.. and bind it in dataset.. i want to update the fname using datatable.. but it is not working ..throwing the error "Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information."See my source code
[Code]...
i have built a DB app using vs2010Beta2 + an Access DB .mdb file for my customers the save bnt work s ok, but when i close the app i get an error message come up saying :- Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that dose not return any key column information.i have no errors repoted in the error window at the bottom and all runs well untill frm_closing,below is the code in my form closing event. below that is the code for the btnSave event
Private Sub frmMainCustomerDetails_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
If MyState = "Edit" Or MyState = "Add" Then
[code]....
When this code segment execute
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Me.Validate()
Me.myDA.Update(Me.myDataSet.Tables("Table1"))
Me.myDataSet.AcceptChanges()
End Sub
It giving the following error. Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information. Can there is another way to update the access database by using datagrid view.
I'm working on a piece of software to read a comma separated text files with thousands of lines each line has around 32 word separated with a comma What my code does at the moment it reads the file line by line choose 11 words out of the 32 and outputs them into a new file. This is actually time consuming although i used threads and a progress bar my manager still not happy. So i was thinking if i can read the whole text file into a 2 dimensional array and then choose certain Colums to output on the new file that will make it work much faster. But i don't know how to read a whole colum from a 2 dimensional array. And let's say for example the array is gonna be like array(9500)(32) where the first argument representing the number of lines and the second represents the number of fields in each line. Is there any way to access it like this array(all lines)(15) I'm using vb.net 2008
View 2 RepliesI have a property active to indicate status of an employee. Along with all the details, i extract the details from an employee table into a dataset, but however i am not able to get the value present in active as i get an invalid cast exception.
This is the property declaration.
CODE:
Reading bit type sql server db column from dataset
View 3 Replieshow to read a text file that is column aligned. I understand how to read a delimited file (i.e.: comma, pipe, space, etc.) but the file I need to read is column aligned. [Code]
View 6 RepliesIs there a way to auto-update a listview based on reading a column?
Requirements:
1) The code must make a call to a user-created "Private Sub" to recalculate
2) Update must be automatic. .SelectedItem or clicking a row will not work
3) The formula function cannot be included in Form_Load
I've got everything working if the user selects a row, then clicks an "update" button using .SelectedItem. But with my current program containing 200 rows, it's not feasible. Simply put, how would I go about updating a listview column (0 in this case) based off a call to a formula, then updating the row?
I have a variable defined as Object(,) that was read in from excel. Without getting into a for/next, is there a simple way to read the c-th column or r-th rown from that array into a single variable?
View 2 Repliesi am developing an application for generating xml file with some details inside and regenerating it whenever i need.Step1: In the user interface,i have placed a gridviewcontrol during run time. i used Datatable for building the table and assign this table as datasource to the datagridview control. last column("GHI") is a checkbox column and its is successfully viewable in the datagridview. the snippet is like this.
dim iDGVWCount as integer
iDGVWCount =1
Dim oDGVW As DataGridView
[code]....
Step 3: if i reopen this xml file and populate the celll details in datagridview, the column 'GHI' is not viewable as checkbox column. it is simply shown like an ordinary cell. the snippet for opening the xml file is shown here.
dim ds as dataset
ds = New DataSet
ds.ReadXml("C: estxml.xml")
[code]....
Question1 : is there any setting needs to be done for bring back this checkbox column automatically in the datagridview while reading from the xml file.
Question2 : how we can bring the value of unchecked column as false in the xml file. the node is included in the xml only if a checkbox is checked.
I am reading data from the database with SQLCommand object SQLReader, all I want to know is I want to read a specific row from my column myData...e.g.I want to read row 11 or random row from mycolumn, what is the correct syntax I am reading all the data(rows) from mycolumn with the command
"SELECT mycolumn from Table1"
what is the syntax to read the 11 or any row of this column?
I'm working on a Parental control
I have 3 questions:
1) How to detect a starting process -
Solved here
2) How to capture a copy of the process and look in all controls from all forms to see if the Text/Items property has offensive keywords
3) If yes, how to close them immediately. - myProcess.kill
Write your code as efficient as you can to reduce CPU load, to consume less energy and protect our planet from global warming.