473,397 Members | 2,116 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,397 software developers and data experts.

Programmatically binding datagrid

Hi,

I have a datagrid that contains a checkbox template column. I have followed
the sample in Q306227, but I have a problem evaluating the content of the
datagrid columns to decide a value for the checkboxes check property.

According to the sample I should use this statement in the BindCheckbox
event to evaluate a column:

Public Sub BindCheckBox(ByVal sender As Object, ByVal e As EventArgs)
'Create a new instance of a CheckBox.
Dim oCheckBox As CheckBox = CType(sender, CheckBox)
Dim container As DataGridItem = CType(oCheckBox.NamingContainer,
DataGridItem)
'Evaluate the data from the Grid item and set the Checked property
' appropriatly
If container.DataItem("contract").GetType.ToString = "System.DBNull"
Then
oCheckBox.Checked = False
Else
oCheckBox.Checked = CBool(container.DataItem("contract"))
End If

End Sub
The problem here is that my project is configured to use "Option Strict" and
does therefore not allow the statement

If container.DataItem("contract").GetType.ToString = "System.DBNull" Then

I tried to use Container.cells(2).text instead, but this only returns a
empty string in all rows.

Any suggestions on how to to do this ?

Regards

Niclas
Nov 18 '05 #1
2 2190
Hi, Niclas

Why not try
If IsDBNull(container.DataItem("contract")) The
oCheckBox.Checked = Fals
Els
oCheckBox.Checked = CBool(container.DataItem("contract")
End I

Bin Song, MC

----- Niclas Lindblom wrote: ----

Hi

I have a datagrid that contains a checkbox template column. I have followed
the sample in Q306227, but I have a problem evaluating the content of the
datagrid columns to decide a value for the checkboxes check property

According to the sample I should use this statement in the BindCheckbox
event to evaluate a column

Public Sub BindCheckBox(ByVal sender As Object, ByVal e As EventArgs
'Create a new instance of a CheckBox
Dim oCheckBox As CheckBox = CType(sender, CheckBox
Dim container As DataGridItem = CType(oCheckBox.NamingContainer,
DataGridItem
'Evaluate the data from the Grid item and set the Checked propert
' appropriatl
If container.DataItem("contract").GetType.ToString = "System.DBNull"
The
oCheckBox.Checked = Fals
Els
oCheckBox.Checked = CBool(container.DataItem("contract")
End I

End Su
The problem here is that my project is configured to use "Option Strict" and
does therefore not allow the statemen

If container.DataItem("contract").GetType.ToString = "System.DBNull" The

I tried to use Container.cells(2).text instead, but this only returns a
empty string in all rows

Any suggestions on how to to do this

Regard

Niclas

Nov 18 '05 #2
Hi, Niclas

Why not try
If IsDBNull(container.DataItem("contract")) The
oCheckBox.Checked = Fals
Els
oCheckBox.Checked = CBool(container.DataItem("contract")
End I

Bin Song, MC

----- Niclas Lindblom wrote: ----

Hi

I have a datagrid that contains a checkbox template column. I have followed
the sample in Q306227, but I have a problem evaluating the content of the
datagrid columns to decide a value for the checkboxes check property

According to the sample I should use this statement in the BindCheckbox
event to evaluate a column

Public Sub BindCheckBox(ByVal sender As Object, ByVal e As EventArgs
'Create a new instance of a CheckBox
Dim oCheckBox As CheckBox = CType(sender, CheckBox
Dim container As DataGridItem = CType(oCheckBox.NamingContainer,
DataGridItem
'Evaluate the data from the Grid item and set the Checked propert
' appropriatl
If container.DataItem("contract").GetType.ToString = "System.DBNull"
The
oCheckBox.Checked = Fals
Els
oCheckBox.Checked = CBool(container.DataItem("contract")
End I

End Su
The problem here is that my project is configured to use "Option Strict" and
does therefore not allow the statemen

If container.DataItem("contract").GetType.ToString = "System.DBNull" The

I tried to use Container.cells(2).text instead, but this only returns a
empty string in all rows

Any suggestions on how to to do this

Regard

Niclas

Nov 18 '05 #3

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

0
by: Ann Morris | last post by:
INTRODUCTION One of the most powerful aspects of .NET and Windows Forms is data binding. Data binding is the process of associating user interface (UI) elements with a data source to generate a...
6
by: ad | last post by:
I use the code to create a DataGrid and filled with data, But the DataGrid1 didn't display in WebForm. How can I display the DataGrid after creating it? DataGrid DataGrid1 = new DataGrid();
1
by: Niclas Lindblom | last post by:
Hi, I have a datagrid that contains a checkbox template column. I have followed the sample in Q306227, but I have a problem evaluating the content of the datagrid columns to decide a value for...
18
by: Julia Hu | last post by:
Hi, I have a datagrid, and in different rows I need to programmatically bind different type of controls and load data into these controls. For example,in the first row I need to bind data into a...
1
by: Craig | last post by:
How do I programmatically change the text property of a label in an ItemTemplate in a datagrid? Specifically the Text property. I want to change the databinding to another column at runtime. ...
2
by: Andre Ranieri | last post by:
Hi folks, I have a datagrid which contains a template item checkbox column. I've included a checkbox as a HeaderTemplate item which fires a server-side function to check or uncheck all the...
8
by: Richard L Rosenheim | last post by:
I have a dataset containing a parent table related to a child table. The child table contains an ID field (which is configured as autonumber in the datatable), the ID of the parent, plus some...
5
by: Brad Shook | last post by:
I am trying to bind one column of a datagrid to a seperate textbox and the rest of the fields to a datagrid. the comments are too large to fit in a datagrid so I created a textbox below the...
2
by: David C | last post by:
I followed the torial using this from MSDN http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dv_vste chart/html/vbtchCreatingWebServerControlTemplatesProgrammatically.asp to...
6
by: Andrew Jocelyn | last post by:
Hi How do I programmatically change (read/write) the values in this app.config file at runtime? Specifically I want to change the client endpoint address but it would be nice to change other...
0
by: Charles Arthur | last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
0
Oralloy
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,...
0
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...
0
tracyyun
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...
0
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing,...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.