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by: Benny Raymond |
last post by:
reply to: benny@pocketrocks.com if possible:
I'm trying to set up a hierarchy system in this database where each row
can be related to a previous row. The problem is that when I go to
addTreeRow, it doesn't allow me to use Convert.DBNull for the childof
column, even though I have nilable set to true. (All parent nodes have
to be set to null, since they are not the child of any other row...
especially the very first row, which will have...
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by: dbuchanan |
last post by:
Hello,
Is this a bug?
Is there some kind of work around?
I want to add default values for a few columns in my datagridview
I found the "DefaultValuesNeeded" event for the datagridview
I gave it a try using the example given in
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by: Bob |
last post by:
1- Inability to easily reset datagridview combobox selection to null
Solution - add a contextmenustrip to the column in which you have the
combobox on the datagridview. show to user, something like Remove selection.
In the onclick event
Me.Datagridview1.CurrentRow.Cells.Item("YourColumnName").Value =
System.DBNull.Value
2- You can use same technique for ordinary comboxes, instead of row in
datagridview set value of the combobox bound...
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by: Rich |
last post by:
Hello,
I am reading data from a sql server table that is under replication. This
table has the replicatin GUID column that is generated with replicatin. I am
reading the data from a dataAdapter/Dataset using a dataview which is the
data source for a datagridview control. When I scroll horizontally in the
datagridview control and reach this GUID column (which is not at the end of
the table) it raises the datagridview dataError event. ...
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by: Bob |
last post by:
How do I show a calendar control or another appropriate control to pick a
date and time for a cell in a column in a datagridview?
Thanks for any help.
Bob
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by: Laz |
last post by:
I need some assistance.
I am getting the error "Conversion from type 'DBNull' to type 'Date' is
not valid." while rendering the edit template column of a calendar
control where the SQL field is null.
Here is the column code:
<ASP:TemplateColumn HEADERTEXT="Planned Date"
ITEMSTYLE-HORIZONTALALIGN="Center">
<ItemTemplate>
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by: sklett |
last post by:
I'm changing from a DataGrid to a DataGridView and have run across a
problem. The items that are bound to the DataGrid have an int Property that
represents a primary key of a lookup table in my database. For example:
table JobTypes
1 | Manager
2 | Controller
3 | Supervisor
table Employee
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by: ReneMarxis |
last post by:
Hello
i have one problem with sorting in an unbound DataGridView. I set
sorting to automatic but i get errors when having DBNull values in the
column that gets sort ("Object must be of type string").
I solved that problem for one grid/column by fetching the _SortCompare
event and doing the sort manualy by seting the SortResult accordingly
if its a null value (-1) or not (e.Handled=false;return;)
Is there some possibility to specify...
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by: Ciaran |
last post by:
I'm having a really strange issue with the DataGridView control in a VS2008 / .NET 3.5 winforms project. I have a simple form with a grid. In the form constructor I call a function to bind the grind to a DataTable, and then loop through the rows setting the background colour of the last cell to LightGrey and the cell itself to read-only if the column value is true. After the form finishes loading the code didn't work i.e. the cells are not set...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
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Your website is...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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