Re: Getting column value from binding - C# Discussion Boards

kanchoette14-Jan-09 21:30

14-Jan-09 21:30

Many thanks for the reply. Unfortunately, that didn't work for me. Any further input would be much appreciated.
It's one of those annoying things that you sniff around for a while until the correct syntax revelas itself. Smile | :)

moon_stick14-Jan-09 21:57

14-Jan-09 21:57

Damn! My first thought was actually that, since this is an object which only represents a row of data within the context of a GridView etc, that it might not actually contain the meta-data... I'll try and have a dig around and see if I can find out for sure.

It definitely isn't definatley

kanchoette14-Jan-09 22:09

14-Jan-09 22:09

Much appreciated.

moon_stick14-Jan-09 22:45

14-Jan-09 22:45

I've used Redgate's .NET Reflector tool to look at the code for DataRowView. The column accessor property looks like this:

<br />
public object this[string property]<br />
    {<br />
        get<br />
        {<br />
            DataColumn column = this.dataView.Table.Columns[property];<br />
            if (column != null)<br />
            {<br />
                return this.Row[column, this.RowVersionDefault];<br />
            }<br />
            if ((this.dataView.Table.DataSet == null) || !this.dataView.Table.DataSet.Relations.Contains(property))<br />
            {<br />
                throw ExceptionBuilder.PropertyNotFound(property, this.dataView.Table.TableName);<br />
            }<br />
            return this.CreateChildView(property);<br />
        }<br />
set {/*elided */}<br />
}<br />

so it looks like you can access the column name property from :

<br />
repRow.DataView.Table.Columns[0].ColumnName<br />

I'd really recommend getting a copy of the tool - I've found it useful in loads of situations. It's available for free here[^].

It definitely isn't definatley

moon_stick14-Jan-09 22:51

14-Jan-09 22:51

I've just read this message again and think I might have been talking at crossed purposes - I've been looking for a way to access the name of the column rather than the value... To access the column value you'd simply use the accessor method:

<br />
repRow["Surname"].ToString()<br />

This assumes that guarantorBinding.Current is the first line in the collection - is this correct? If not, what sort of object is guarantorBinding? Chances are it will have a 'Rows' collection so you'd access the first row using something like guarantorBinding.Rows[0].

It definitely isn't definatley

kanchoette14-Jan-09 23:39

14-Jan-09 23:39

Many thanks for your reply.

GuarantorBinding is a DataSet DataTable. The current position may not be at 0, and I want to find the value for a column for the row which is at position 0 without changing the current position.

Hope that makes sense ...

moon_stick14-Jan-09 23:49

14-Jan-09 23:49

Accessing the row using the indexer won't affect the enumerator (Current is an implementation of the IEnumerable interface) so you can use this without affecting anything the current position.

It definitely isn't definatley

kanchoette14-Jan-09 23:55

How to contact with file in C#?

14-Jan-09 23:55

Ah! I see. It was just me being thick.
Many thanks again for all your input.

thuonghasm14-Jan-09 3:22

thuonghasm

14-Jan-09 3:22

Hi,
In C++ to contact with files we have FILE type but in C# I dont't know how to do that. I can't find any material or document about this problem. Please help me.

Thanks

Re: How to contact with file in C#?

Le centriste14-Jan-09 3:27

Le centriste

14-Jan-09 3:27

Look into the System.IO namespace, particularly the classes that begin with File (File, FileInfo, FileStream).

Re: How to contact with file in C#?

musefan14-Jan-09 3:33

musefan

14-Jan-09 3:33

you say that as if you have looked.

I cant image you did a search for anything related to files in c# and found nothing!!!

do you need something specific about the file, or from the file?

Re: How to contact with file in C#?

vaghelabhavesh14-Jan-09 7:17

vaghelabhavesh

14-Jan-09 7:17

Try this
http://www.csharphelp.com/archives/archive24.html[^]

http://www.codeguru.com/csharp/csharp/cs_syntax/anandctutorials/article.php/c5861[^]

question

mabrouki2314-Jan-09 3:16

mabrouki23

14-Jan-09 3:16

how can i open project c# by visuel stodio 2005

Programm3r14-Jan-09 3:23

Programm3r

14-Jan-09 3:23

ouch ... here comes trouble Unsure | :~

The only programmers that are better those C# programmers are those who code in 1's and 0's Green Alien | [Alien]

Programm3r
My Blog: ^_^

Le centriste14-Jan-09 3:28

Le centriste

14-Jan-09 3:28

More brewing here[^]

musefan14-Jan-09 3:29

musefan

14-Jan-09 3:29

lmao!!! How did you get in this forum? surely that is a more brain draining task!

do you mean open an existing project?
cuz then you can right click the project and select the program to open it with

Guffa14-Jan-09 3:29

Guffa

14-Jan-09 3:29

From Windows explorer: Double click project or solution file.
From Visual Studio: File > Open Project...

Despite everything, the person most likely to be fooling you next is yourself.

User 665814-Jan-09 3:29

User 6658

14-Jan-09 3:29

Click on the .sln/.csproj file from explorer or open them from VS.

modified 12-Sep-18 21:01pm.

Christian Graus14-Jan-09 5:40

Christian Graus

14-Jan-09 5:40

If you can't work this out, and if you can't work out how to give your question a decent subject line, how did you manage to turn your computer on ?

Christian Graus

Driven to the arms of OSX by Vista.

CPallini14-Jan-09 9:12

CPallini

14-Jan-09 9:12

I thought the same. Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
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[My articles]