I had written a article about File Upload. You can find it here[^].

If you are using oracle you can use select for update statement. If you are using MS Sql Server. MS SQL Server uses a read-lock everytime you read something,nobody is allowed to change the data if you are reading them, hence you can update the data if you are reading. Hope this helps.

Your error message indicates that your command objects oCmd and oCmd2 might be using the same connection object. Make sure that they use different connections and your code will work. eg. oCmd = New SqlCommand(query1, connection1) oCmd2 = New SqlCommand(query2, connection2)

To the View button add CausesValidation=False so that it does not perform validation And then on server side onclick for the view button redirect to the appropriate page.

It depends on the version of Visual Studio.net you are using. Visual Studio .net 2002 is shipped with version 1.0 of the Microsoft .net framework sdk while visual studio .net 2003 is shipped with version 1.1 Thus VS .NET 2002 always builds version 1.0 applications, whereas VS .NET 2003 builds 1.1 applications Visual studio .net 2003 also allows you to choose which version your project supports by providing Supported Runtimes property. From the VS .net 2003 toolbar select Project --> Properties --> Common Properties --> Build --> Property Pages Dialog Box --> Supported Runtimes selection. (by default it is 1.1)

You can add an entry in the web.config file in the tag. eg. You can than read this entry using ConfigurationSettings.AppSettings("keyname")

'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 Dim datatb As DataTable = ds.Tables("Customer") Dim datatbTmp As DataTable = datatb.Copy() Dim dsTmp As DataSet = New DataSet() dsTmp.Tables.Add(datatbTmp) 'Save data to xml file and schema file dsTmp.WriteXml(Server.MapPath("Customers.xml"), XmlWriteMode.IgnoreSchema) dsTmp.WriteXmlSchema(Server.MapPath("Customers.xsd"))