Datagridview DataSource Change Auotmatically without need - C# Discussion Boards

markovl15-Jan-13 0:53

15-Jan-13 0:53

You can check the value of the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DirectX\Version registry key. This table[^] will show you the version according to the version number. For example 4.09.00.0904 is DirectX 9.0c.

Re: DirectX9

electriac15-Jan-13 4:59

electriac

15-Jan-13 4:59

I was able to do this on XP but I can't get any code to work on Win X64 could you give me an example.

TNX

Re: DirectX9

Dave Kreskowiak15-Jan-13 6:48

Dave Kreskowiak

15-Jan-13 6:48

You have to look at the same path under the SOFTWARE\Wow6432Node\...

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Re: DirectX9

electriac15-Jan-13 12:17

electriac

15-Jan-13 12:17

This seems to be working. Any suggestions? I guess I will have to identify the OS and have an alternative for XP - right? Many thanks!

public void readRegistryForDX9()
        {
            RegistryKey rk = Registry.LocalMachine;
            RegistryKey sk = rk.OpenSubKey("SOFTWARE\\Wow6432Node\\Microsoft\\DirectX");
            string temp = (string)sk.GetValue("Version");
            if (temp.IndexOf("4.09")<0) MessageBox.Show("Directx 9 Must be installed");
            else MessageBox.Show("Directx 9 already installed");
            return;
        }

Re: DirectX9

Dave Kreskowiak15-Jan-13 19:39

Dave Kreskowiak

15-Jan-13 19:39

You don't need to "read the OS". You just look under one registry path and if the value isn't there, you look under the other one. If it's not under either, DirectX isn't installed.

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Dave Kreskowiak

Re: DirectX9

markovl16-Jan-13 1:48

markovl

16-Jan-13 1:48

What Dave said above should do it.

One note though - be sure to free any resources used by the RegistryKey objects - encolsing them in using statements is good:

using (RegistryKey sk = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Wow6432Node\\Microsoft\\DirectX"))
{
    // the rest of your code;
}

It's also good practice to check sk for null as if the key's not present on the system sk.GetValue("Version") will thrown an exception.

P.S. No need to explicitly return from a void method.

Re: DirectX9

electriac16-Jan-13 4:42

electriac

16-Jan-13 4:42

Markovl - TNX:

Datagridview DataSource Change Auotmatically without need

Nabawoka14-Jan-13 16:35

Nabawoka

14-Jan-13 16:35

i set the dataSource to datagridview

DatTbl = CustomerManger.SelectCustomersAllDT(); //dattbl is datatable
            ds.Tables.Add(DatTbl);  //ds is dataset
            DatTbl.TableName = "Customers";
            dgvCustomers.DataSource = null;
            dgvCustomers.DataSource = ds;
            dgvCustomers.DataMember = "Customers";

then is selectionChange event i Select another data in list and before set it to listbox datasource .. datasource of datagrid change Mad | :mad:

and all columns and data of customer cleared and replaced by Notices ???????

private void dgvCustomers_SelectionChanged(object sender, EventArgs e)
{
NoticList NL=NoticeManager.SelectNoticesbyCustCD(newCust.CustId);  
}

if i comment this line datasource of datagrid view doesn't change

Re: Datagridview DataSource Change Auotmatically without need

PIEBALDconsult14-Jan-13 17:19

PIEBALDconsult

14-Jan-13 17:19

I don't know. You probably need to show more code.

And you don't need the DataSet, you can use the DataTable (or preferably its DefaultView) as the DataSource.

How to get the select value in a multiple dropdownlist

vanilsonwdd14-Jan-13 13:20

vanilsonwdd

14-Jan-13 13:20

hi, I'm trying to get multiple values that was selected in a dropdown list, the problem is that it's only returning one value, if I select two or more values only give me one, here's the code:

List<String> dep = new List<String>();
        foreach (ListItem item in sltnamedep.Items)
        {

            if (item.Selected)
            {


                
                dep.Add(item.Text);


            }

        }
        for (int i = 0; i < dep.Count; i++)
            Response.Write(dep[i]);

Re: How to get the select value in a multiple dropdownlist

Jibesh14-Jan-13 14:33

Jibesh

14-Jan-13 14:33

is the MultiSelection is enabled for the listView? can you print/check the number of selected items using sltnamedep.Items.Count property

Jibesh V P

Re: How to get the select value in a multiple dropdownlist

micke.andersson28-Jan-13 3:54

micke.andersson

28-Jan-13 3:54

Make sure you have focus on the control.

MSDN says:

Quote:
Items appear selected only when the ListView control has focus. To select items in response to a user action such as a button click, be sure to call the Focus method in addition to setting this property.

Adding a reference to a project

PozzaVecia14-Jan-13 11:33

PozzaVecia

14-Jan-13 11:33

Hi I created i project using a reference to a dll (Microsoft.Office.Core).

I'm going to port this project on different computers, and it happens that this assembly is under different path.

So to be able to use the project I need to update the reference.

Is there a way to let know the project to look for the correct path of the .dll?

Re: Adding a reference to a project

Richard MacCutchan14-Jan-13 22:21

Richard MacCutchan

14-Jan-13 22:21

See some of these answers[^]; this DLL comes with MS Office, so you need that installed on the target system.

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How can i save data from word table to SQL database C#

Nkeshe14-Jan-13 2:16

Nkeshe

14-Jan-13 2:16

Hi I have created a word document where user fill in details. Now i want to save those details when the user close the word document.

Thank you in advance

Re: How can i save data from word table to SQL database C#

Eddy Vluggen14-Jan-13 3:15

Eddy Vluggen

14-Jan-13 3:15

Using an UPDATE statement, to update the database. You'd use an IDbConnection to connect to the database, and use a IDbCommand to execute the SQL-statement.

Post some code if you're stuck, or get a good introductionary book if you don't know where to begin.

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Reading jpeg image from a binary data

coolprasadhegde14-Jan-13 0:44

coolprasadhegde

14-Jan-13 0:44

Hi,
How to read a jpeg image from the binary data in a file in C#? Here, image is stored as a bindary data in the file.Now i need to construct a image from this data.

Re: Reading jpeg image from a binary data

OriginalGriff14-Jan-13 0:53

OriginalGriff

14-Jan-13 0:53

Assuming that the data is a Jpeg file, just stored as binary:

byte[] bytes = File.ReadAllBytes(path);
MemoryStream ms = new MemoryStream(bytes);
Image returnImage = Image.FromStream(ms);

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Re: Reading jpeg image from a binary data

coolprasadhegde14-Jan-13 20:38

coolprasadhegde

14-Jan-13 20:38

Thanks Griff..But this gives "Argument Exception" saying parameter is not valid.

Re: Reading jpeg image from a binary data

OriginalGriff14-Jan-13 21:03

OriginalGriff

14-Jan-13 21:03

Then I suspect that the data is not a jpeg file - what are you trying to do? Not "read a file as an Image, but what is the file? Why are you reading it? What are you trying to achieve? It may be that one of use is using the wrong terms! Laugh | :laugh:

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Capturing windows messages

Dainer Mesa Lima13-Jan-13 19:45

Dainer Mesa Lima

13-Jan-13 19:45

I need help on how to capture windows messages. Smile | :)

Re: Capturing windows messages

Sandeep Mewara13-Jan-13 20:23

Sandeep Mewara

13-Jan-13 20:23

Following article should help you learn how to do it: Trapping windows messages[^]

Sandeep Mewara
Microsoft ASP.NET MVP 2012 & 2013

[My Latest Article(s)]:
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Re: Capturing windows messages

Pete O'Hanlon13-Jan-13 23:29

Pete O'Hanlon

13-Jan-13 23:29

What technology are you using? Windows Forms or WPF? If you're using WinForms, there's an implicit WndProc that you can add your code into. If it's WPF, things get a little more complicated as you have to add your own WndProc handler.

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SqlConnection vs IDbConnection

levanduyet_vn13-Jan-13 15:40

levanduyet_vn

13-Jan-13 15:40

Dear All,
I have used SqlConnection to connection to Sql database. There are some friends, they always use IDbConnection. He also suggest me use IDbConnection. I also see some of project here using IDbConnection: AccountPlus[^]

_ What's the difference bettwen SqlConnection and IDbConnection.
_ Using IDbConnection is better?

Tks,

LVD

Re: SqlConnection vs IDbConnection

PIEBALDconsult13-Jan-13 15:56

PIEBALDconsult

13-Jan-13 15:56

SqlConnection implements IDbConnection and therefore IS_A IDbConnection.

In my opinion, one should code to the interfaces; that's what I do, and I'm not the only one. It may not matter now, but if you ever have to provide support for another database, you'll be glad you did.

I regularly work with SQL Server, MySQL, Oracle, Access, and Excel. In the past I've also had to work with Cache, Ingres, and maybe some others I've forgotten. As long as there's an ADO.net connector, my code can work with it.

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