Short Ref For Dataset Values?
Feb 23, 2011I have a dataset and I am referencing items in it like this:MainForm.DataSet1.Tables("JobsTable").Rows(1).Item("JobName")
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VS 2008 'Char' Values Cannot Be Converted To 'Short'
Dec 25, 2009[code] Error4'Char' values cannot be converted to 'Short'. Use 'Microsoft.VisualBasic.AscW' to interpret a character as a Unicode value or 'Microsoft. VisualBasic.Val' to interpret it as a digit.
View 1 RepliesReturn Null Values In Short Circuit If Statement?
Jul 1, 2011How can i return null values in if statement above. This statement is not working if condtion is false its retruning me 0 value even if condition is false
dim d as nullable(0f Decimal)
d=(if(_dr("value") isnot dbnull.value,Convert.toDecimal((_dr("value")),Nothing)
Collect Before And After Values From A Dataset?
Sep 12, 2011I have a multi-user app which consists of a Windows form (VS2008), and a SQL Express 2008 database. I'm already detecting if the dataset has changed before the user closes the form so I can prompt them to save their changes. What I'd like to do is to capture the changes they've made, and write them to a database table so that users can track all changes made to each record on the DB.What is the best way to grab hold of the data changes before they're written back to the DB and also grab the original records?
View 1 RepliesFill Values From Dataset?
Feb 9, 2012I have a need to assign values from my dataset to a variable but when i use string (which its normally text) and the item in that row of the dataset is empty it tells me that conversion from DBnull to string is not valid
View 2 RepliesAccess Values Stored In A Dataset In VB?
Feb 17, 2012So i have a DB with 3 tables. User Table with U_ID and U_Name, Class with C_ID, and C_Name and User_Class Table with U_ID and C_ID. Foreign keys are set.I want to display the classes associated with the selected user. The user is identified by their name. I know these are the two SQL statements I need to execute:SELECT U_ID FROM User WHERE U_Name = current_U_name
then
SELECT C_ID FROM User_Class WHERE U_ID = current_U_ID
then
[code].....
C# - How To Get Distinct Values From DataTable In DataSet
Dec 23, 2011I am using strongly typed dataset and have many tables in that. The problem is now I want to filter data from
GetData()
function which has a query like
select * from table_name
How can I filter a particular table and distinct values from it. Also if I try to filter it return all column but rest have null values except the one I asked, so I cannot assign it as a datasource to a datagrid or combobox. How can I do this..
How To Update ComboBox Values From DataSet
Apr 12, 2009How to update combobox values coming from a dataset if I change the connection string. The connection string takes effect but doesn't update the dataset tied to the combobox.
View 3 RepliesPreventing Values To Be Loaded In Dataset
May 5, 2009I have assigned a column of values from an Excel file into a dataset.I am using the following code to check if the column header is empty:[code] However for some reason even if I have an empty column header in the Excel spreadsheet, it is automatically assigned a value within the dataset. For example if I blank out the third column header in Excel spreadsheet, the dataset assigns it as "F3" as its column header which is making the above code ineffective. Can anyone tell me how to prevent the dataset to automatically assign a value to its column header.
View 4 RepliesVisual Studio: Add Values That Are In Different Dataset?
Jan 26, 2010I have visual studio 2008 I have two different datasets that take values as "money". those datasets are in two different forms. I would like to collect each and every value of all different entries o the two datasets, and add them so that I can display the totals in a new form that has textboxes that displays the total of the two different datasets.
View 7 RepliesAllow Only Numeric Values In Dataset Partial Class?
Aug 5, 2009I have a textbox which is bounded to the typed dataset. If the user in the textbox &hit keydown, it should allow only numeric values with 2 decimal points and also it should not allow more than one "."(dot). I found many but all thats are using textbox event
View 2 RepliesBind The Values In A Combobox To A Column In A Dataset?
Aug 21, 2011it's possibly to bind the values in a combobox to a column in a dataset? If so, how would I go about doing it? For example, If I have a column named 'Names' in a DataSet, each comboBox item would be a name from that column.(There will only me at maximum, 10 entries)
View 6 RepliesIDE :: Handle Null Values When Updating Dataset?
Jun 11, 2009In a WinForms app (VS2008 / .Net Framework 3.5) I bind data from SQL Server to controls. If there's a null value e.g. an employee has no middle name (allowed by business rules), when I browse that record at runtime an exception is thrown. So I code: If Not (row("middle_name") Is DbNull.Value then txtMiddleName.DataBindings.Add(New Binding("Text", row, "middle_name)). Say someone adds a middle name to this record, because the control had no databindings the dataset.HasChanges property is false and update stored proc doesn't run. I guess I could handle this like this: If txtMiddleName.Databindings.Count = 0 AndAlso txtMiddleName.Text <> "" Then row("middle_name") = txtMiddleName.Text. I guess I would have to do something similar to handle a value changing from not null to null.
View 8 RepliesIterating Through A Dataset And Obtain Values Of Each Column In A Row
Apr 1, 2009I would like to iterate through a dataset and obtain values of each column in a row
[Code]...
ZedGraph - Display Only Highest 10 Values From Dataset?
Jan 7, 2010I'm working with a zedgraph bar chart and displaying only certain values from a dataset. I have a dataset with 912 records. One field is called "DeviceName" and one is called "TimesOffline". I am able to bind the chart to the dataset, but it wants to plot all 912 records. What I need is to somehow sort the dataset to retrieve the top 10% (or something) devices with the highest number of times offline.
[Code]...
Error While Trying To Fetch Values From Multiple Tables Into A Dataset?
Jan 27, 2010while trying to run the following code:-
Public
Class Form1
[code]....
Make DataSet Read From Xml File To Add Values To ComboBox?
Jun 20, 2012wanted to create a chat loader, and i wanted it to read values from a xml table.
This is the code i have used in Vb.
ChatXml.ReadXmlSchema(My.Application.Info.DirectoryPath & "/../Release/chat.xml")
ChatXml.ReadXml(My.Application.Info.DirectoryPath & "/../Release/chat.xml")
ComboBox1.DataSource = ChatXml.Tables
[code]....
Complex DataBinding accepts as a data source either an IList or an IListSource.
enter code here
Not sure, but tried to add data to the Tables in DataSet, but seems i can't get it to work.
DB/Reporting :: Error While Passing Access Database Values Into Dataset
Sep 23, 2008Trying to make a vb.net program that is able to read values from an access database and pass them into some data sets. Here is the code I have so far, with the error line between the two dotted lines:
[Code]...
Program 2010 Not Getting "created" Values From Stored Procedure With Dataset
Aug 11, 2011I am using VB.Net 2010 and calling a stored procedure with a dataset to get values in a table plus "created" values.
The values for the "created" values do not come across from the stored procedure. They all show as zero in the IDE and False for the variables. I know I am getting the record because the first five values come across from the stored procedure into the variables correctly.
When I step through a VB6 program using ADO the values are pulled across from the stored procedure.
The problem seems to be in the interface between a dataset and "created" fields in a stored procedure.[code]...
C# - Get TimeZoneInfo Short Name?
Sep 9, 2009Is there any method to get the 3 char code from System.TimeZoneInfo.Local?e.g. EDT instead of Eastern Daylight time etc.
View 1 RepliesHow To Set Any Single Bit In A Short
Apr 28, 2011In VB.NET: If varShort is a Short and varBit is a value from 0 to 15, how can I set the bit in varShort identified by varBit without disturbing any of the other bits in varShort? My problem, of course, is with the most significant bit, bit 15. Since varBit is determined at runtime
View 2 RepliesPut Short Cut Ket For Buttons
Aug 19, 2009how can i put short cut ket for the buttons i made?example i made a button name PRINT.how can i make that ctrl + p to be the shorcut key format?
View 8 RepliesCan Make Multi Short Key?
Jun 8, 2012[code]'when i enter 'Q' key output(textbox1.text) = 'qQ' how Show Q only''' 'and how i can set multi shortkey output = CTRL+TAB+CAPS LOCK,and bla bla , and send to Timer1' End Sub.[code]
View 2 RepliesCovert A Long Name To Short Name?
Jun 5, 2011How to Covert a long name to short name??? for example: How to convert Visual Basic name into VB
View 1 RepliesHow To Short Datagrideview Data
Feb 18, 2011How Can I Short My Data in datagrideview. I want to short by coloum like I have a OLOUM Received_Date I want to short this coloum.
View 2 RepliesIP Address To Location And Short Url?
Mar 21, 20091. i need to find the place / city / location from IP address. does anyone know about this?
2. I want to know if there is any way to get a short URL for the db entities(i.e; if i press my website and type a db content it should go to a new page)for ex i have a site called [URL] here in actual code if i press [URL], it redirect to new page to display the content of abc.Now, what i want is i need to type [URL] and it should redirect to new page with info abc.
Short Cut Keys For Controls?
Aug 30, 2011I have created one silverlight application.In the application i have included two buttons named as SAVE and CANCEL. I want to give short cut keys for those two controls.For Example if user click CTRL+S it should save the data and CTRL+C it should cancel.
View 6 RepliesShort Key Ctrl + - Not Working Vb?
Apr 20, 2012I have the following code:
Private Sub myGrid_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles myGrid.KeyDown
If e.KeyCode = Keys.Divide AndAlso e.Control Then
[Code].....
This works (For "Ctrl"+"/"), but the problem is that this works for any key different than "-". If I specify that the Keycode is Keys.Subtract (To use "Ctrl"+"-") it is never caught!
Short Key Ctrl + / - Not Working?
Mar 16, 2012I have the following code:
Private Sub myGrid_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles myGrid.KeyDown
If e.KeyCode = Keys.Divide AndAlso e.Control Then
Dim response = MsgBox("are you sure to delete a record?", vbYesNo)
If response = vbYes Then
[code]....
This works (For "Ctrl"+"/"), but the problem is that this works for any key different than "-". If I specify that the Keycode is Keys.Subtract (To use "Ctrl"+"-") it is never caught!
Short Way To Create Arrays?
Jan 27, 2011In VB.NET, I create my arrays like
Dim myArray = New ArrayList
But isn't there a way to create an array with elements without having to make a variable?
In Ruby, the long way was
array = Array.new