Any Object That Supports Column Grouping
May 25, 2010Is there any object that supports column grouping in VB.Net. Because I've been trying datagridview with no success.
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Tell If An Object Supports Scalar Comparisons?
Mar 6, 2010how i would check to see if a given class supports the >, = and < operators?
Given an object passed in, I am looking for code that implements the following logic:
If GetType(someObj).SupportsScalarComparisons() Then ...
I don't know if this is a case for Reflection, or ?
Sorting Datagridview And Grouping By A Specific Column?
Aug 25, 2009i am trying to use DatagridView Control.
Is there any possibility to sort multiple columns and group the data by a specific column..
Making An App That Supports Tags?
Feb 6, 2009Tags as in <Html> and such (ie. <center> and </center>) but ive come to a problem, I cant seem how to check the TAG to change the text's color.
View 2 RepliesVB6 Control - .NET No Longer Supports DDE
Jan 26, 2010I know .NET no longer supports DDE however unfortunately most "Finance" related programs (ie, charting and data vendors) use DDE to tie into their data. (Ie, esignal, Marktfeed etc). I've been toying around with NDDE however I'm having a hard time implementing it...unless I'm just making 1 request then it's fine. My question is would it be possible to take VB6 Label Control since it has the "Linkmode, LinkTopic, LinkItem, Label_Change" Properties/Methods and events in it....and create something like DDELabel.dll via Activex control project then use that as part of VB.net?
I tried doing it via the Control Wizard then using it in .NET however I know for a fact I'm not doing it right. Perhaps if someone much more competent could attempt it see if it does give the DDE functionality when used in .NET they can point me in the right direction...
Create An Application That Supports Addins?
Jan 13, 2009I have 5 different applications that I have written for my business, they are all interfaces for a point of sale system. I TCP/IP interface handling part of the application is rock solid, problem is that occationally I will come across a small issue, such as a memory leak that I came across a few weeks ago. After I fixed it, I had to then fix said leak in 5 different projects as they all use the same interface base code.Now, if things were different, say a function that all my applications used I would just write it into a class in a dll and have all my applications use the function from that class. Problem is however, using a parent/child explanation unlike my example here where I have interface 1 - 5 as my parents using common.dll as a common child. I need to have InterfaceParent using 5 different children with different attributes.That being said, there are a few stipulations, depending on the customer I may only need to install interface 1 and 3, or 2 and 5, or 1,3 and 4.
View 2 RepliesEclipse IDE, C# And Plugins That Supports .Net Framework4.0?
Sep 4, 2011I want to use C# and VB.Net in Eclipse 3.7 Indigo.VB.netI could not find the plugin about VB.net in Eclipse.So I want to know is there a plugin for Eclipse that allows you to write C# or VB.net code using the .Net Framework 4.0 or 3.5?
View 1 Replies.net - DataGridView.Column(ColumnName As String) Gives Error "Object Reference Not Set To An Instance Of An Object"
Jan 7, 2010This is something that has been bugging me for a while as it is easily fixed but not desirable.I have a DataGridView that has 5 columns. The first is called ID.In vb.net the following line gives an error "Object reference not set to an instance of an object": dgvJobs.Columns("ID").Visible = False ' ERROR dgvJobs.Columns(0).Visible = False ' OK
Obviously using the name is much better than a hard coded value to reference the column but wondering if there is anything i can do to get this to work correctly?The datagridview datasource is BindingSource control with the datasource being a dataset.
[Code]...
File I/O And Registry :: Making An App That Supports Tags
Feb 5, 2009If the tittle isn't detailed i need help on making a program that is color Coded for example (if someone types <center> hello </center>) both <center.> and </center.> will be blue. the only way I can do it (the only way i know.)
[Code]...
Using Reflection To Determine If A Control Supports An Event?
Mar 7, 2011To avoid the TRY Catch Block, is there a way to determine if the control supports the specified event without having a try catch block?
[code]...
Column Removal - Getting "Object Reference Not Set To An Instance Of An Object" Error
Feb 19, 2009I am trying to perform a simple column removal, but I am getting the "Object reference not set to an instance of an object" error.
These are the various commands I've tried:
[CODE]............................
No matter what, I still get the error. When debugging I can see that "dt" and "col" and "dt.columns(18)" are all set to their proper objects.
Windows And Web Application - Code Written In VB 2005 Supports In VB 2008 ?
Mar 29, 2009I have been developing windows and web application using Visual Basic 2005 for a long time. Now i want to change from Visual Basic 2005 to Visual Basic 2008. I would like to know what ever projects i have done in visual basic 2005 will works in Visual Basic 2008. Will the existing code in visual basic 2005 supports Visual Basic 2008 or do i need lot of modification. I haven't used VB 2008 but i hear that most of the code which written in visual basic 2005 supports visual basic 2008. What are the things i need to take care when working the existing projects in visual basic 2008.
View 3 RepliesVS 2010 Application Supports The Creation Of System Files From A Windows Mobile PC - Subject?
Jan 28, 2010I would like to fine-tune their work tool.The basic idea is to load different libraries etc CppThere in my working environment, such as files - *. dsm.Read the information from them is no mean feat.
View 2 RepliesPlace Text Onto The Graphics Object At A Specified Row & Column?
May 7, 2012I currently have a graphics object g where I am drawing lines and ellipses on with the command
g.DrawEllipse(definedPen, Fc, Fr, Tc, Tr)
g.DrawLine(definedPen, Fc, Fr, Tc, Tr)
This works fine. However what I can�t find out how to do is place text onto the graphics object at a specified row & column.
Could Not Get Column Information For Database Object Named 'COPYtblMHPuse'
Aug 11, 2009I'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.
Create Image File From MS Access OLE Object Column?
May 21, 2009An OLE Object column contains images but the image type (jpg/gif/tiff) is unknown. These images need to be extracted from the DB and saved to disk. The application is primarily using VB.NET but C# examples are welcome too.
View 3 RepliesObject / Array Reading (Row Or Column) Into Single Variable?
Apr 9, 2009I 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 RepliesSorting A Dataview Object Based On A Column Number?
May 10, 2011I have a dataview object that is being populated by database fields - so I can sort on these partulular columns by specifying the actual column names without any difficulty. However, I have been asked to add a few more columns to the dataview, and these columns will be calculated columns, not directly derived from an underlying database column.The users want to be able to sort on these new columns as well - even though there is no actual column name I can use to sort.
I have not been able to see where I can sort a dataview based on the actual column integer value used when the user clicks the appropriate heading to sort.
Is "dataset.table.rows.find()" Func. Supports Sql Date Type Primary Key
Jul 18, 2012i'm trying to do some appointment book so i decided to use MonthCalendar control and date changed event for choose the date i tried dataset.table.rows.find() function on other tables which have int primary key and it works its finds my row/s i need but when i tried this func. on date type primary key it cannot find i tried to search with date type ==> fail search with string type like 03.07.2012 ==> failed etc.
View 3 RepliesControling, Saving, Setting Column Order In DataGridView Object
May 25, 2009I have several forms that have a DataGridView object in them. I recently discovered the AllowUserToOrderColumns attribute. I set it to true and I can reorder the columns at will. The problem is that the order for these columns is lost once the form is closed. Ok, how do you save the order for these columns and then restore them to the form once it has been reopened?
View 4 RepliesMultidimensional Array - Multi-column Data Variable Object?
Sep 25, 2009I want to create an in-memory object in VB.Net with multiple columns. What I am trying to do is create an index of some data. It will look like:
Row 1: 23 1
Row 2: 5 1
Row 3: 3 38
...
I know I can use a rectangular array to do this, but I want to be able to use indexOf opearations on this object.
C# - Applying Attribute To Property In Business Object Such That Column Isn't Visible After Databind?
Dec 29, 2011I was just wondering if it is possible to apply an attribute to a property within a business object (MyBusinessObject) such that after the DataSource of a grid is set to a List(Of MyBusinessObject), the visible property of the column will automatically be false. For example:
myGrid.DataSource = New List(Of MyBusinessObject)
Public Class MyBusinessObject
[code]....
.net - Grouping Using LINQ?
Feb 5, 2010I'm having a heck of a time with transforming a simple SQL Query into a LINQ query(using vb btw)
Here is my SQL:
SELECT USRDEFND5
FROM int_gp_employee
GROUP BY USRDEFND5
[Code]...
I've tried a number of different variations of the LINQ. My current statement is:
From b In xmlFile...<row> Group b...<usrdefnd5> By b...<usrdefnd5> INTO group when I foreach through the resulting collection, EVERY line (17000) shows up.
.net - Grouping Application Settings?
Aug 12, 2011My VB.net application has a lot of application settings, is it possible to group them somehow(other than having a common name)?For example, my application has a lot of winforms each of which needs to save some information about itself. Is it possible to use something like:
Form1.width = My.Settings.Form1.Width
Form2.width = My.Settings.Form2.Width
etc.
.net - Linq Nested Grouping?
Jul 7, 2009I've a large table of Items and I need to organize them by Category, then by Year and then by Month.Item has CategoryID and Dated properties.I got this far:
Dim Items = From Item In DB.Items _
Group By CategoryID = Item.CategoryID _
Into Categories = Group _
Order By CategoryID
But where I put the:
Group By Year = Year(Item.Dated)
and the
Group By Month = Month(Item.Dated)
The final result should be something like this:
For Each Category in Categories
For Each Year in Category.Years
[code].....
Asp.net ListView Or Repeater Grouping By Three
May 8, 2012I am using a nice shopping cart I found online. I would like to translate this code to use a repeater or listview and dynamically retrieve my data, but I cannot seem to find a way to group my data correctly.I know the ListView can group by a certain amount of items, but I have not found a way to do it with this scenario.The shopping cart works by having a ul list of items, followed by their details in the div below. This process starts again by getting three more ul items, followed by three more details. How could I do this using a ListView or repeater? I have not found a way to repeat both of these sets of data I need in a group of three.[code]
View 1 RepliesDatatable Grouping Using Linq?
May 25, 2011I'm completely dense here, but I'm trying to get some stats from a DataTable. One of the columns in the datatable is called "colour".I need to find out how many of each instance of "colour" are in the datatable.
I'm trying:
Dim q = From p In PGWorkingDataTable _
Group p By p("colour") Into Group _
[code].....
Forms :: Grouping Controls Using Tag Or Name?
Feb 24, 2010I am trying to group various controls (of the same type, e.g., labels together, buttons together, etc.) on a form using a tag or a name of some sort so I can identify all those that belong to tag 'A' and those in tag 'B'. In the end I will have on a form a number of labels grouped as tag 'A' and some labels as tag 'B' so I can change their visible properties on/off.
View 4 RepliesGrouping Applications In The TaskBar?
Sep 2, 2009If a user has a few of my applications open and he/she minimises them I would like to group these in the task bar like MS Word for example.
Product Name - Application 1
Product Name - Application 2
Product Name - Application 3
Product Name - Application 4
Because all of my applications begin with the product in the Title bar can this be achived.
Grouping Code For Outlining?
Oct 1, 2011I have multiple sub's that i'd like to group together, however all of the groups need to be in the same class. They all work together, but it would help me organize the code and make it less confusing if I could group some of the different subs together for outlining purposes. Is there a way to do this? I tried to find answers online, but I couldn't find what I was looking for.
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