Databases :: Check When Data Is Not Existed?
Feb 21, 2011
I am importing Excel files data resided in root folder, when the file is not existed then an error message(oledException was unhandled by user code) thrown "'444$' is not a valid name. Make sure that it does not include invalid characters or punctuation and that it is not too long.", whe i gave valid name data is pulling without any error,i wanted to check this collapse and put some messagebox Following code is to import the excel file data into.
[Code]....
Error occured at Catche Exception blok.
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Nov 24, 2010
I have problem to check file if they are exist in some folder.
I create web application with file structure in Solution Explorer like this :
UploadFile
+My Project
+Reference
+Bin
+File (Folder for save the file)
+Obj
-Upload.aspx
-Upload.aspx.designer.vb
-Upload.aspx.vb
+Web.config
I want to save or upload file with file name : myFile.txt to folder File in solution explorer. But before save or upload the file, we must check the myFile.txt file name at Folder File.
If file name myFile.txt is exist in Folder File then the system will not save or upload the file
But if file name myFile.txt is not exist in Folder File then the system will save or upload the file (myFile.txt)
Yes, this is my problem and I hope the expert in vb.net programming can explain and told me the way to fix this problem.
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Jan 16, 2011
I am using asp.net membership provider in one of my database which is working perfectly fine. However, I have another database which doesn't have the asp.net membership provider enabled (I don't mind using the provider in this as well).
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I cannot use a single database for storing all the users !
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Jan 27, 2010
I have to automate one database process in .Net web applicaiton which uses Oracle 11g Database as Backend.
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Jan 12, 2010
I have .Net web application which connects to Oracle 10g database. I want to check for space availibility before creating Indexes. Also if space is not sufficient then I would like to send an Email message to admin. How to do that from .Net web application?
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Jul 6, 2010
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Jul 15, 2010
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Dim i As Integer
For i = 0 To detailsview2.Rows.Count - 1 Step i + 1
Dim row As GridViewRow = GridView1.Rows(i) [code]....
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Nov 12, 2010
i have a UP and DOWN buttons ouside a gridview and a checkbox inside the templated field .I will check the checkbox to sleect a row , after that if i click on UP button the checkbox above the selected checkbox should be selected.
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Jul 1, 2010
I have a check box in the grid.IF IsChecked has a value checkbox should be checked else not.Should i check the check box in the ItemDataBound event or will it get checked automatically.
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<Columns>
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Jan 6, 2010
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Oct 28, 2010
I developed a web site more then a year ago with .net2.0/c#/mssql 2005. it works fine but i was asked to replace mssql with mysql.
I wrote a class to complete data access works (unfortunately, I didnt use nhibernate or other data access tools :((
I edited the class to use System.Data.Odbc objects rather than System.Data.SqlClient.
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in debug mode, i noticed that it might be caused by OdbcParameter but not sure.
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Feb 11, 2011
when we select a check boxes creat dynamic check boxes. I have a main catagory check box when we select this main catagory check box creat subcatagory check boxes related to main catagory dynamically.
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Aug 16, 2010
i generated dynamic checkbox n placed it in table cell( <td runat='server' id="trial"></td>) ,
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i recieve exeception :System.NullReferenceException was unhandled by user code
[Code]....
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Dec 28, 2010
I have a web site which uses one SQL database but the hosting company is very slow sometimes and I got database timeout, login and similar errors. Can I implement my code to use two databases simultaneously? I have stored procedures and the data is updated periodically.
EDIT:
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EDIT:
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A transport-level error has occurred when sending the request to the server. (provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.)A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
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Nov 22, 2010
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Feb 22, 2011
I have asp.net form having 4 check boxes. not check box list. these 4 check boxes having the ValidationGroup property with same name say "chkValied". I have added Custom Validator there. now want to check at least on check box should be check out of these.
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Jun 28, 2010
How to validate check box/ check box list in Model?
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Nov 22, 2010
There are 10 check boxes in one page. How to code to allow user only check one?
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Dec 3, 2010
finding all check boxes in asp.net grid view is checked or not.
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Jun 23, 2010
I'm now working with a project of document management system using asp.net web forms. I want to handle the checkout/in concept , I don't know how to make it, how to download the file to user local machine in the checkout , and then upload from his local machine again to the server in the check in. ِAny body can tell me how this works?
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Apr 7, 2010
I have loaded up a gridview object with data. I have turned on Edit on the grid. It lets me edit the data, but I also want to put some code to check for correct data in each field. I tried to assign a requiredfieldvalitor, comparevaliditor but they don't work. Is there an event I can capture to fire up some code before the grid sves my data?
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Aug 27, 2010
Ours is a Asp.net web application. Database is Oracle. Its an Internet Application.
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Dec 28, 2010
I have two databases (DB1 & DB2) from which i wish to build a single table/gridview output, ideally i want to be able to sort the table by using any data.
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This is a oneway street, i do not want to update the databases from the webfront end.
Here is a Trimmed Down Version of what i have
[code]....
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Jun 8, 2010
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