VS 2008 Apply Primary Key On Sno Column?
Jan 12, 2010How to apply primary key on sno column in the following dataset
dim sql = "select * from employees"
Dim da As new SqlClient.SqlDataAdapter (sql,con)
'ds.Clear()
[Code]......
ADVERTISEMENT
How To Apply Primary Key On Column
Jun 22, 2010How to apply primary key on sno column in the following dataset. [code]
View 1 RepliesLinqToSql Contains On Multi-column Primary Key From In-memory List Containing Primary Keys
Aug 23, 2011On a client i have an anonymous list containing a multi-column primary key previously selected from the DB.Then i need to select all the records from the DB that equals the primary key list i have stored in the memory.[code]
View 1 RepliesHow To Apply Column Alignment To DataGrid
May 19, 2012I have an VB.Net ASP page that I have a datagrid on it with 5 columns and a few rows of data. The page will show the data and grid just fine. I need to now apply alignment to the datagrid columns.
dgLast5Bills.DataSource = dtBill
dgLast5Bills.DataBind()
dgLast5Bills.Columns(0).ItemStyle.HorizontalAlign = HorizontalAlign.Center
The code above will error out when it hits the line for the alignment.
Wpf :: Apply ValueConverter On DataGrid Column?
Jan 20, 2012I have written a converter class(implementing IValueConverter) which converts a code that comes from the database (for example "CTY") into a more user friendly description (for example "City"). I want to use the converter on a single Column in my XCeed WPF Datagridcontrol, but I do not know to which property I must set the Converter to. I also tried to attach it to a DataCell using a style but it won't work properly and I think it is also not necessary since the converter should apply to only one column and not every cell.The columns are also autogenerated so if I could apply it at runtime, that would be awesome!I don't know to which property of the column I must aplly the converter to (the Xceed Column doens't have a "Binding" property. Do you guys have any suggestions?More examples or code can be provided if asked for. I hope my problem is a bit clear for you.EDIT:
This are the things I use in my XAML file:
<utils:BudgettaireEntiteitConverter x:Key="BudgettaireEntiteitConverter" />
<xcdg:DataGridCollectionViewSource x:Key="GridViewSourceDefault"
[code]....
Primary Key Column Value In MS Access Database
Jan 21, 2009I'm using vb2005express for forms (front-end) and ms access database. I have a form with a master-detail setup. The problem I'm having is that when I set the primary key column to autonumber, I don't get the pk value generated in ms access database into my master datatable in forms when a new record is created. Then I tried setting the AutoIncreament to True in the pk column of the datatable in my dataset (forms). This generates a number in my pk column but its not the number generated in the database (since I think because the pk column is still set to AutoNumber). So I change the field property of my pk to Number in the access database and on my dataset (forms), i still have AutoIncrement to True.
This works okay since what it seems to be doing is getting the max value for the pk column when the datatable is filled upon form load. The problem now is that I normally don't do tableadapter.fill(datatable) at form load since I think there would be a performance issue if record counts around millions. What happens now is that when I create a new record, the pk generated is still 1 which will cause duplicate violation when saving to database. I'm not quite familiar with access features but in oracle, what I do is I create a sequence in database then I create a function that gets the next value of the sequence. Then at form load I set the datatable.column.default_value = get_sequence. How do I do this in ms access?
How To Definie A DataTable Column As Primary Key After Creation
Mar 18, 2010I am importing Tables from a Oracle DataBase, using a VB.NET dataAdapter. I use the "fill" comand to add the imported data to a DataSet. How is it possible to define a specific column of a DataTable as PrimaryKey, after the DataTable is already filled with data?
View 2 RepliesApply 2 Toned Back Color To My Datagridview Column Headers Or Listviews
Mar 27, 2010I'm new to VB 2008 and was wondering how to apply 2 toned back color to my datagridview column headers or listviews. Where the color is lighter at the top of the column header and then becomes darker towards the bottom of the column header. It seems most apps use them these days.
View 1 RepliesImport Row From TABLE1 To TABLE2 Without Primary Keyfield Or Adding Correct Value To Primary Key
Mar 2, 2012How i can import row from TABLE1 to TABLE2 without primary keyfield or adding correct value to primary key
i tried with two different codes, but result is same, it says: "In the column "Key"a constraint on the uniqueness.[code]...
Apply Percentage Format To Custom Cell In Custom Column In DataGridView?
Jun 25, 2009I came across this great article on creating a custom datagridview column which creates a graph-like effect in the cells of a custom datagridview column:[URL]..Does anyone know how you would edit this to format the number in the cell as a percentage? And does anyone know how you would set this up to take 0 values which do not create any graph effects at all.I have been trying to do this but keep getting errors.
View 1 RepliesVS 2008 Table HAVE To Have A Primary Key?
Aug 3, 2009I have an access database with 4 tables and two of the tables have absolutely no need for a unique field that would be a primary key. One will only have one record and the other is a detail table for two master tables. I of course get an error like "UpdateCommand is not supported against a SelectCommand that does not return any key column information." when I try to save. Do I have to just create a primary field key I don't need or is there a work around for this?
View 4 RepliesVS 2008 : Characteristics Of Primary Key In The Table?
Oct 24, 2009I would like to have some explaination about the characteristics of a primary key in the table of such database.This is for vb 2008 express edition,since im new to this language,if this is true, as far as i understand about the characteristic in setting the primary key on each field for true.My question is if you are doing an updates/edit records in your table using the DataContext,if you setup the primary key for true of one of your field in the table it would edit all records in one datarow but if you put the primary key for true in all fields except one of them,all the records in the data column of that field which primary key is false could be edited.Basically its impossible to edit all records in the datarow and all the records in the datacolumn of the table in such one event.Is there any further explanation about the characteristics of primary key in the table?
View 1 RepliesVS 2008 : Dataadapter.Update And Primary Key?
Aug 18, 2010I have two similar databases and i want to update a table of one database from the other, so insert new records, delete records that are not in the source and update different values.I use the dataadapter update method but it not recognize the primary key, so it only work when the destination table is empty. Otherwise i have an exception of duplicate primary key.The databases are sqlite but i tried with access too with the same error (different message due to different provider but the two times saying that cant insert because the primary key is duplicate).
My code is:
vb
Private Function updatetable()
connectdbsource()
connectdbdestination()
[code]....
Make A Custom Skin For .Net 2008 And Apply It To A Form?
Sep 10, 2009I'm new to programming so I would like to know if is there any tutorial about how to make a custom skin for VB .Net 2008 and apply it to a form!?
View 10 RepliesVS 2008 Builder - Filter Report Using The Primary Key
Oct 22, 2009I have quite a complicated database with a lot of relations and I need to make form that gets data from all kinds of tables and calculate prices etc... Another important thing is, when I open/load a report in my application, I want to be able to filter it using the Primary key. I don't want all records in my database to be shown. I know for sure this can be done but I don't know how.
View 2 RepliesVS 2008 Table 2 Contains A StoreId Field As A Primary Key?
Mar 8, 2010Ok i have 3 tables in a dataset
Table1 contains items for sale (referenced)
Table2 contains Stores (Parent)
Table3 Contains items in a particular store (Child)
the problem is the data in this case. Table 2 contains a StoreId field as a primary key. Table1 Contains an ItemId field. My problem is in table 3 this contains 3 fields, StoreId, Name and Quantity.
Now my Table1 contains a field called Name and one called PluralName, I need to determine which field in table one relates to the Name field in table3.
The following 2 constraints exist currently in my app
Table2 - StoreId (one) to Table3 - StoreId (many)
Table1 - Name (one) to Table3 - Name (one)
can i add another constraint :- Table1 - PluralName (one) to Table3 - Name (one) ???
I am presuming if i do i will get a constraint error as the property does not relate on a one to one level if the store has more than one item in stock and vice versa when it has only one in stock.
2008 : Apply Drag And Drop Control Like Visual Studio?
Aug 24, 2009How to apply drag and drop control like visual studio...after start dragging, the control still there, and make a rectangular image and drop to local form or other form...
View 3 RepliesVS 2008 Cannot Read Integer As Primary Key To Save To Database
Nov 13, 2009I'm using Visual Studio 2008 and MS Access 2007.
I have linked the database to vs2008.
The first problem I have now is how to add all the data to the combobox from access 2007? [I have solved this myself accidentally.]
The second problem I have is I cannot save the primary key.
Assume that I have these:
Table name: tCustomer
Fields:
ID Datatype [Text]
[Code]....
Now, the user fills in the form. The ID cannot be edited by them where it's automatically counts the number of customer in database and give the id. For example, I already have 3 customers in the database so when I add new Customer, it will be 4 for the ID.
When I click save, it shows me the message of "Index or primary key cannot contain a Null value." I have set an input mask for my Customer. So, can I make it to save in a format like CT001, CT002, CT003 automatically?
VS 2008 Setting A Primary Key And Changing The Names Of Some Fields On Database File?
Aug 5, 2011Lets say we have an Access file in a well known path (i.e. "C:MyFolderMyFile.mdb"). That file does not have a primary key set on the table we are interested in . Is it possible to set one of the fields as a primary key (for example the "ID" field , which is also an AutoNumber data) ? And one more thing : I'd like to change the name of a field on that table . For example , lets say there is a field called "My Field 1" (note the space characters) and we want it to be renamed as "My_Field_1" . If it's possible , I'd like both these changes to be permanent in the data base file itself , not just in the imported DataSet ,
View 7 RepliesAdd A Checkbox Column At First Column Of Datagridview Including Column Header?
Apr 9, 2010How to add a checkbox column at first column of datagridview including column header?After adding, how to code to "check all" or "uncheck all"?
View 27 RepliesHow To Apply A .msstyles To A .NET App
Dec 11, 2009I code GUIs in .NET frequently, and most of them only have the value of being a GUI, e.g. they don't do anything otherwise impossible. So most of the development goes to making them friendly, intuitive and eye-candy.Then it comes to my mind it would be simply amazing to skin them through .msstyles files, since there are so many places to find those files, and also tools to make your own.And some of those msstyles are just stunning, probably not for your whole desktop, but for styling homemade apps it would be perfect.
View 2 RepliesHow To Apply A Skin To VB
Oct 17, 2009i have one quetion maybe some of you know codejock skinframework witch allows you to apply a skin to your vb6 application and i thought about asking is there a way applying a xp/vista theme to an vb .net application i dont want to use xp style if you think like that i mean downloading a skin and applying it only to my application? is that possible in vb .net
View 2 RepliesHow To Apply Inheritance
Apr 22, 2012i am just trying to apply inheritance ..Below is my Code ... on which i am not getting the output on my Text_Box ... when in write it in a Child Class
Imports System
Imports System.Windows
Imports System.Windows.Forms
[code]....
Apply A Dropshadow To A Mdichild?
Jul 26, 2009I'm developing a MDI application and since my mdichild forms have no border I wish to apply a dropshadow just like a normal form, is it possible ?
View 6 RepliesApply Action To Every Tabpage?
Mar 19, 2010I have this action will fire on the painting of a tab page.
Private Sub TabPage1_Paint( _
ByVal sender As Object, _
ByVal e As System.Windows.Forms.PaintEventArgs) _
Handles TabPage1.Paint
[Code]...
Apply Asynchronous Code In VB?
Mar 15, 2009I have a small VB.NET application built using VS 2008 and .NET 3.5.Very simply, there is a timer that kicks off every few seconds to download an XML stream from the web. I look at this stream and manipulate it.The problem I am facing is that the remote web server may not respond in a timely fashion to the following line of
[code]...
How can I implement asynchronous calls so that the my application can behave without locking up?
Apply Calculation To A 2d Array?
Mar 23, 2012I have a 2d array and I want to do a calculation on each element in the array and then return the index which results in the smallest value.
I have tried iterating through each element in the 2d array and running the calculation. If the calculated result is smaller than the currently stored minimum I set that to the minimum.
This works but it runs so slowly it makes the solution a non starter. It performs each calculation quickly but because of the number of elements in the array the calculation for the whole array is stupidly long.
Apply Changes To All Forms Of An Application
Jun 21, 2010Is there a way to apply any changes made to an entire application and not just the open (active) form that you are in? I.E. I change the backcolor to a color from a color dialog. I want that chosen color to be applied to all the forms' backcolor in my project. Can this also then be applied to all the other controls' backcolor? The code that I posted works but all forms and controls have to have the changes applied to each one separately.
[Code]....
Apply Focus To A Panel?
Mar 29, 2010Suppose I have a control component xxx; I want to apply focus to it.
[code]...
Apply Gradient To A Square?
Apr 8, 2012I am working in vb.net, visual studio 2010.
So i want to apply gradient to a square, a center to edges gradient. This is the code:
Public Class Form1
Private Sub PicSourcefrm(ByVal sender As System.Object, ByVal e As PaintEventArgs) Handles Me.Paint
Dim Graph As Graphics
[Code].....
NOTE: Picsource is just a PictureBox named that way. If I put "BrushSquare.SurroundColors = Color.Red" in a comment. The program works but the edges are white, not red like I want them to be.