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The enum really should have the [Flags] attribute, which tells the compiler that all of the values are supposed to be unique and provides a few other subtle runtime differences.
The best way to test to see if a particular value has been set is:
FileInfo info = new FileInfo(@"c:\windows\explorer.exe");
if ((info.Attributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)
{
}
else
{
}.NET does allow you to treat an enum without the [Flags] attribute as if it were a flags enum to some extent, but it isn't recommended. If at some point the language or the compiler rules change, using an enum in this way without the [Flags] attribute could generate a compiler warning or error.
-----------------------------
In just two days, tomorrow will be yesterday.
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I can display results of a view I created in Sql server on a dataGrid,how would I display the same result on a txtBox ???
aPerfectTool
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Hi
I think you want to access database tables field to show in textbox.
If below code is not your answer contact me:
SqlConnction cnn = new SqlConnection("Data Source=YourCopmputerName;Initial Catalog=YouDatabaseName;User Id=databaseUserName;Password=DatabasePassword");<br />
string strSql="SELECT id,name FROM Table1";<br />
DataSet ds = new DataSet();<br />
SqlDataAdapter da = new SqlDataAdapter(strSql,cnn);<br />
da.fill(ds,"Table1");<br />
if (ds.Tables[0].Rows.Count != 0)<br />
{<br />
TextBox1.Text = ds.Tables[0].Rows[0][1].toString();<br />
}<br />
This code get "name" column of tables from first row. you can access another cells by changing array index.
Bye
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Hi,
I think U can achieve this in two ways.
1) Command.Text = "SELECT * FROM UR View Name (Nested of Table Name)"
2) Create one store Proc, Let the Store Proc intern selects view data by executing SELECT * FROM UR View Name.
For binding and displaying on Data Grid follow normal method.
Happy Coding
Gowda
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Thanks guys, I got it going, your reponse helped me alot 
aPerfectTool
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hi
i want to write database application with c# 2005 and i want to set password to sqlserver 2005 database that users can not access to tables,views,....
but .. how to do ??
thanks
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Hi
You can do this in the target system which you want to install your program on it.
But anybody can stop the sqlserver and take a copy of your database and then attach it to his/her sqlserver on another system without knowing username and password!!
I want to say it's not a cool way.
Do this to set a password to your database:
1-Open SqlServer and in Object explorer expand Security\Logins
2-Right Click and Logins and choose "New Login..."
3-In Login - New window type a LoginName and choose "Sql Server Authentication" and type password and uncheck checkboxes unless "Enforce password Policy" and Click "Ok "
4-Delete "BUILTIN\Administrator"
Now you have set password to sqlServer 2005
To set database password:
1-Expand your database and goto Security\Users
2-Right click on Users and select "New User..."
3-Type username and for import user click on button "..." front of "Login Name" and browse your user
4-Choose "db_owner" from below listbox
5-Press ok
I wish this is usefull
For more information goto:
http://forums.microsoft.com/MSDN/showpost.aspx?postid=672105&siteid=1[^]
This was my question in Msdn forum
Bye
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main points to keep in mind in making chess in c#.
rao nasir ali khan
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Excellent answer !!
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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Hello,
I am using properties from Properties.Settings.Default.* in my background worker thread. I was wondering if they are thread safe or not ? moreover if two threads try to read the same settings value at the same time, (NOT WRITE, just READ) is there any chance that my application will crash throwing exception ?
Thanks
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Any shared resource that is read-only (that is, no threads are writing to the resource) is inherently thread safe. So unless you've got another thread writing to the settings, yes, 2 background threads reading the settings is safe.
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Hi.
Thanks for your reply.
Regards
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My application accepts single string databaseaddress.
I think the best form for this is
servername:port/databasename
parts other than servername may be missing. So legal forms are also
servername
servername:port
servername/databasename
samples:
143.44.454.45:33/mydb
myhost@mycomp.com
myhost@mycomp.com/mydb
How to extract servername, port and databasename to separate variables ?
servername, port and databasename does not contain : and / characters.
There is no need for syntax check.
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I think System.Uri.TryCreate method will work for you.
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i am working on a Point of sales application in C#. I want to redirect the values to the pos device connected to LPT1. Can anyone tell me how i can do this.
Thanks for your help
Regards
Hari
rkharikrishnan.bizhat.com
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Isn't LPT1: just printing it?
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You can connect arbitary devices to the parallel port, not just old printers.
--
Rules of thumb should not be taken for the whole hand.
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Of course you can. I remember the old ZIP drives that hooked up to the parallel port and took forever to read and write.
My message seemed to be truncated (or I just forgot to hit update  ). My point is that when you connect a device to the port, it will need some kind of driver. Then you can interface with that driver.
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VS05 provides a class for the parallel port. IIRC it's in the system.io.ports namespace that should allow you to write to it. If you're using VS02 or 03, you'll have to google up a 3rd party implementation. Try the articles here as a starting point.
--
Rules of thumb should not be taken for the whole hand.
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Thanks for the reply. i tried using system.io.ports namespace. But its showing only serial ports data. What should i do to send to both com1 and LPT1 ports? How can i check whether it is open?
Regards
Hari
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I developed an Add-in for Outlook 2003 with Visual Studio 2005 Team Suite.
My solution was created via:
Other Project Types -> Extensibility -> Shared Add-in
And I selected support for Microsoft Outlook.
Question 1:
I uncheched all the "Exclude" option of the assemblies in the Setup Project and builded it successfully.
The Add-in installed and ran well in another computer which had also VS 2005 Team Suite on it. However, on a third computer, which only had .NET Framework 2.0 but not VS 2005, the Add-in installed normally but did not load when Outlook started. What's the problem?
Question 2:
My CommandBarButton runs only a few times.
I added a CommandBarPopup to the Main Menu and then added a MsoControlType.msoControlButton to the popup. In the ClickEventHandler of the button, a Windows Form object is created and shown.
The problem is, each time I start Outlook, the button is available for only a few times, usually 2-3 times, sometimes only once. Afterwards it becomes unavailable at all. It gives no response when I click it.
Some of the codes are as follows:
//Acquire the "Menu Bar" and create a new control on it
menuBar = ((Outlook.Application)applicationObject).ActiveExplorer().CommandBars["Menu Bar"];
commandBarControl_CM = menuBar.Controls.Add(MsoControlType.msoControlPopup, 1, "", 6, true);
commandBarControl_CM.Visible = true;
commandBarControl_CM.Caption = "Sychronization";
//Add buttons to the newly created control
CommandBarPopup commandBarPopup_CM = (CommandBarPopup)commandBarControl_CM;
CommandBarControl commandBarControl_SI = commandBarPopup_CM.CommandBar.Controls.Add(
MsoControlType.msoControlButton, 1, "", 1, true);
commandBarControl_SI.Visible = true;
commandBarControl_SI.Caption = "Calendar Sychronization";
//Add button event handlers
CommandBarButton button_showinfo = (CommandBarButton)commandBarControl_SI;
button_showinfo.Click += new _CommandBarButtonEvents_ClickEventHandler(button_showinfo_Click);
private void button_showinfo_Click(CommandBarButton Ctrl, ref Boolean CancelDefault)
{
System.Windows.Forms.Form form_CalMng = new Form_CalMng();
form_CalMng.Show();
}
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Question 2 has been solved. The button object has to be declared at class level.
But help me with Question 1, please!
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I begin to believe that it has something to do with the developing environment. I tried the Add-in on two computers WITHOUT VS2005 and got the same result, which is that the Add-in did not load. However, I tried it on another two computers WITH VS2005 on them and the Add-in loaded successfully.
Any hint?
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Hi All,
A project I am working on requires me to interface DCOM components on a Windows NT machine with a server running 2003 with .NET 2 on it.
The problem is I can't seem to find any good advice on how this can be done. Specifically the client can not change and thus I require something like a wrapper so that the client can create a connection to the server via DCOM, but the server will be dealing with it via .NET remoting.
Can anyone point me in the right direction of how this can be done?
Thanks
Andy
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