c# combo box populating

[JC]

Hi all,

I have a combobox control in a c# form. I would like to populate this
drop down with values from a dataset- so have written a procedure to
populate a dataset.

Once created I am using this code to populate the combobox...

DataSet ds = new DataSet();
ds = im.getAllOnline();//a function that return a dataset
comboBox1.DataSource = ds.Tables["IM"];
comboBox1.DisplayMember = "username";
comboBox1.ValueMember = "userIp";

I have checked the dataset, and it is being populated, but for some
reason I cannot get the combobox to work.

I would really appreciate help with this cos its driving me nuts!!!

[Stefan]

Hi James

if it's a webcontrol you have to bind the data to the grid
comboBox1.DataBind();
"JC" <ja*********@btinternet.com> wrote in message
news:d7**************************@posting.google.c om...

Hi all,

I have a combobox control in a c# form. I would like to populate this
drop down with values from a dataset- so have written a procedure to
populate a dataset.

Once created I am using this code to populate the combobox...

DataSet ds = new DataSet();
ds = im.getAllOnline();//a function that return a dataset
comboBox1.DataSource = ds.Tables["IM"];
comboBox1.DisplayMember = "username";
comboBox1.ValueMember = "userIp";

I have checked the dataset, and it is being populated, but for some
reason I cannot get the combobox to work.

I would really appreciate help with this cos its driving me nuts!!!

[Dmitriy Lapshin [C# / .NET MVP]]

Hi,

You should establish a binding between the combo box and the data source
instead. Please refer to the documentation on the
System.Windows.Forms.Binding class as well as Control.Bindings collection in
MSDN.

--
Dmitriy Lapshin [C# / .NET MVP]
X-Unity Test Studio
http://x-unity.miik.com.ua/teststudio.aspx
Bring the power of unit testing to VS .NET IDE

"JC" <ja*********@btinternet.com> wrote in message
news:d7**************************@posting.google.c om...

Hi all,

I have a combobox control in a c# form. I would like to populate this
drop down with values from a dataset- so have written a procedure to
populate a dataset.

Once created I am using this code to populate the combobox...

DataSet ds = new DataSet();
ds = im.getAllOnline();//a function that return a dataset
comboBox1.DataSource = ds.Tables["IM"];
comboBox1.DisplayMember = "username";
comboBox1.ValueMember = "userIp";

I have checked the dataset, and it is being populated, but for some
reason I cannot get the combobox to work.

I would really appreciate help with this cos its driving me nuts!!!

[James Crane]

Thanks for replying Stefan,

The combo box in question is on a windows form, not a web form. For some
reason the control does not have a DataBind() option that you woudl
expect - thats what I'm finding confusing.

Any ideas?

Thanks

JC

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[James Crane]

Hi Dmitriy,

Thanks for the tip I'll read the articles!

I cant link to the datasource direct cos I'm using a seperate layer to
grab the data, and passing it over as a dataset - so I still have a
little problem.

Thanks for the advice though.

JC

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[Dmitriy Lapshin [C# / .NET MVP]]

James,

DataSets and DataTables actually are the most widely used data sources for
the Windows Forms binding - so it's just what you need!

--
Dmitriy Lapshin [C# / .NET MVP]
X-Unity Test Studio
http://x-unity.miik.com.ua/teststudio.aspx
Bring the power of unit testing to VS .NET IDE

"James Crane" <ja*********@btinternet.com> wrote in message
news:O7*************@TK2MSFTNGP11.phx.gbl...

Hi Dmitriy,

Thanks for the tip I'll read the articles!

I cant link to the datasource direct cos I'm using a seperate layer to
grab the data, and passing it over as a dataset - so I still have a
little problem.

Thanks for the advice though.

JC

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[James Crane]

Thanks everyone for your help - I think I've cracked it now.

As per Miscro$t site, I went through the dataset and created an
arrayList. I passed this to the combobox and it worked!!
Happy days

Thanks again

JC
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[James Crane]

Thanks everyone for your help - I think I've cracked it now.

As per Miscro$t site, I went through the dataset and created an
arrayList. I passed this to the combobox and it worked!!
Happy days

Thanks again

JC
*** Sent via Developersdex http://www.developersdex.com ***
Don't just participate in USENET...get rewarded for it!