DataBinding Issues - ng.asp-net-forum.visual_studio_2005

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	Energizeer
	Asp.Net User

DataBinding Issues

1/19/2007 7:34:37 PM

0/0

Hello,
I'm new to VS 2005 and have been learning for only a few weeks so please forgive me if I seem like a newbie.
I got a number of Videos from LearnVisualStudios.net and they walked me through the drag and drob database set up. I have datagrids which work well and display the data just fine. The thing is, I want to customize the layout of the way the data is shown and edited. I have read many articles about the subject and am now pretty familiar with ADO.NET and all that. However, much of the info I have found doesn't apply to my set up in VS.NET.

VS set up my dataset and the contained DataTables and Table adapters for me. Basically all I want to do is set the text in a textbox or label to a field in my database. This is the code I was trying to use:
[CODE]textBox1.Text = DataSet1.Tables["MainTable"].Rows[0].ItemArray[2].ToString();[/CODE]

Dataset1s intelisence doesn't give me a Tables option so this code won't work.

From what I have learned, VS uses Typed DataSets which don't seem to have the .Tables method like the old ADO.
I have now tried the following:
[CODE]DataSet1 NewDataSet = new DataSet1();
String Testout = NewDataSet.MainTableTBL.Rows[0].ItemArray[0].ToString();
TextBox1.Text = Testout;[/CODE]

But I get an error that there is no row at position 0.

I would really appreciate some help on this matter,

Thanks.

P.S. Please don't tell me to read a Book. I don't have access to a VS.NET book at the moment. Thanks :)

	mikepope
	Asp.Net User

Re: DataBinding Issues

1/21/2007 12:54:50 AM

0/0

I hate to interject what I suspect is a stupid question here, but how come you're not using declarative databinding? e.g.:

<asp:textbox runat="server" id="TextBox1" text='<%# Eval("somefield") %>' />

(See also Databinding Expressions.)

-- Mike Pope

ASP.NET User Education

This posting is provided "AS IS" with no warranties, and confers no rights.

	Energizeer
	Asp.Net User

Re: DataBinding Issues

1/21/2007 1:52:23 PM

0/0

Hi Mike,

TBH I'm not sure how to data bind declaratively :(

I did manage to figure out how to do it via code behind like this:

//Set up Table Adapter
DataSet1TableAdapters.MainTableAdapter TBLAdapter = new DataSet1TableAdapters.MainTableAdapter();
//create new instance of the Data Table using the getdatamain method of the adapter
DataSet1.MainTableTBLDataTable MainDataTable = TBLAdapter.GetDataMainTBL();
TextBox1.Text = MainDataTable.Rows[1].ItemArray[0].ToString();

Do you think Declarative data binding would be better?

I will look for some tutorials on this, if you have any other links on this I would appreciate it!

Thanks,

	mikepope
	Asp.Net User

Re: DataBinding Issues

1/23/2007 11:26:40 PM

0/0

Well, "better" is a term that has multiple dimensions. :-) It depends on a variety of factors, such as whether you want to handle the data binding yourself, for control over the data or whatever reason. Certainly declarative data binding is quicker to get up and running and can be easier to maintain.

Here are some tutorials:

Walkthrough Topics ? ASP.NET Data Access (Visual Studio)

QuickStart Tutorials -- Databinding Expressions

Also, Scott Mitchell has written an extensive set of tutorials on data access in ASP.NET, starting here:

Building and using a 3-tiered data architecture with ASP.NET 2.0

I don't how useful these are to you. Hopefully you can get a good overview of declarative data-binding from the first two. The three-tier tutorials are rather more than just simple data binding, of course.

-- Mike Pope

ASP.NET User Education

This posting is provided "AS IS" with no warranties, and confers no rights.

4 Items, 1 Pages 1 |< << Go >> >|

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