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I wrote a windows service in VB .NET that primarily get information from a database and does the appropriate actions. It starts up automatically on boot.
The problem is that I need to make this windows service configurable e.g. The database location might be changed and I need to have a way for the service to know that.
Any suggestions??
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I've done this using a configuration file, and if you don't like it, you can use the registry.
Free your mind...
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You can add an entry in the web.config file in
the <appSettings> tag.
eg.
<appSettings>
<add key="keyname" value="keyvalue"></add>
</appSettings>
You can than read this entry using ConfigurationSettings.AppSettings("keyname")
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I think you mean the app.config file. web.config is just for ASP.NET applications.
Anyway, for the original poster...
In visual studio make sure the project of your windows service has an app.config file, you use it just like the web.config file (see Pratik Desai's post above). When you deploy your application Visual Studio will change the name from app.config to myWindowsService.exe.config or whatever the exe file is called + .config.
I have a feeling that the config file is only read once (I'm not sure if you can force it to re-read it to check for changes if it is only read once) in which case your service will have to be restarted.
--Colin Mackay--
"In the confrontation between the stream and the rock, the stream always wins - not through strength but perseverance." (H. Jackson Brown)
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So whenever I want to deploy the windows service, I have to copy the app.config file with it? If the app.config file is all I have to modify, restarting the windows service isnt really a hassle.
Thanx
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Yes, but remember that when you build your application windows will copy the app.config into your Debug or Release folder and rename it with the name of the exe with the addition of the .config.
Also - And it took me a while to figure out why it wasn't working the way I expected - The config file is not read while the windows service is installing. So your installer class can't access it without a lot of extra work.
--Colin Mackay--
"In the confrontation between the stream and the rock, the stream always wins - not through strength but perseverance." (H. Jackson Brown)
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Hi guys,
I need to make a DLL that can RECIEVE and SEND data to an ASP file depending on information that an ASP file sends or recieves from this DLL.
Please help...Ive never worked with DLLs before.
I would greatly appreciate a small example.
THANKS GUYS!
Jonavis
X-ZD Designs
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-Open the VB6 IDE
-in the new project screen choose ActiveX DLL
-in the class module you can write your functions , subs just as you make in VBScript.
register the DLL and call it from the ASP.
create it using Server.createObject
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i want to know how can i read and save record into .xsl file by ado.net like any table.i did this by vb data control to read and write data to work sheet in excel .xsl file just like .xsl file behave like database and worksheet behave like table.if possible please tell me in detail how can i do it by ado.net and if possible give me the sample code.
tbhattacharjee
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OK. Have you done any research on your questions before you post them here? Finding an example of this one was ridiculously easy. All it took was searching Google for 'Excel ADO.NET'. 
I don't mind helping out, but you have to at least TRY to help yourself first. It will lead to a much greater depth of knowledge about your question and how VS.NET and other technologies work.
This is but a single article and code sample, but Google returned over 58,600 hits on pages written within the last year!
<a href="http://www.dotnetjohn.com/articles/articleid54.aspx">http:
RageInTheMachine9532
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i want to know how can i read and save record into csv file by ado.net like any table.
if possible please give me the sample code
tbhattacharjee
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It's anyones guess why you would want to do this, but here[^] it is.
RageInTheMachine9532
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Instead on show report I want whenever I will click on a button then my report content will export a text file or forward as e-mail to some one. Please give me the code by which I can do my job
tbhattacharjee
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An example of exporting a report to an RTF file can be found here[^]. From there, you can email that file as an attachment...
RageInTheMachine9532
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Say suppose I have populated two tables data in dataset called one “Customer” and other “Order”. How could I save the customer table detail to any xml file from my Dataset? Please give me the code by which I can save only one table detail to xml file if there is 10 tables detail in my dataset.
tbhattacharjee
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'Suppose in the dataset ds you have three tables
'Customer, Order and Supplier. If you want to save
'the Customer table. Below is the code
'Duplicate the table and add it to a DataSet<br />
Dim datatb As DataTable = ds.Tables("Customer")<br />
Dim datatbTmp As DataTable = datatb.Copy()<br />
Dim dsTmp As DataSet = New DataSet()<br />
dsTmp.Tables.Add(datatbTmp)<br />
<br />
'Save data to xml file and schema file<br />
dsTmp.WriteXml(Server.MapPath("Customers.xml"), XmlWriteMode.IgnoreSchema)<br />
dsTmp.WriteXmlSchema(Server.MapPath("Customers.xsd"))
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Please tell me few url from where I can get the knowledge and sample code for developing project by vb.net and crystal report other than www.crystaldecision.com . Actually I want to know the about the various classes of crystal report accessing from vb.net.
tbhattacharjee
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You can find a good start on MSDN here[^]. You'll find all the doc's for all the classes and Samples to go with them.
RageInTheMachine9532
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Please tell me the definition of typed and untyped dataset and what is the difference between typed and untyped dataset.
tbhattacharjee
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You might want to start here[^]
RageInTheMachine9532
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There could be Formula field and Parameter filed in my sub report and I want to know how can I pass value for Formula field and Parameter filed writing code by vb.net, which is embedded in my sub report.
And I also want to know how can I pass report title for sub report writing code by vb.net
tbhattacharjee
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Say suppose there is two formula fields in crystal report and I want to pass value for two formula filed from vb.net writing code. Please give me the sample code by which I can pass value for two formula fields.
tbhattacharjee
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I have developed a small report by crystal report, which comes with visual studio. net. How could I pass report title writing code by vb.net before showing report? Please give me code by which at run time I can pass or set report title.
tbhattacharjee
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Say suppose a single parent table may have relation with other three-child table. I want to show that related to user. If possible please solve my problem and give me the sample code to implement it by vb.net.
tbhattacharjee
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That's a bit of a vague request. What type of applications are you writing? This is a user interface question - so, please, let us know what you technologies you are using for your presentation layer. Are you using ASP.NET or WinForms?
--Colin Mackay--
"In the confrontation between the stream and the rock, the stream always wins - not through strength but perseverance." (H. Jackson Brown)
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