visual| array-Explicit array range
You can now declare an array using an explicit array range, and the declaration is more readable:
Dim A (Ten) as Integer ' old way
Dim B (0 to ten) as Integer ' New way
The array range in Visual basic still starts with zero, so if you want to declare an array that is not a zero-based range, you get a compiler error.
Summary
The Visual Basic
In this series of articles, we'll delve into how to combine the. NET 2.0 and SQL Server 2005 query notification features to inform the application when critical data changes in order to eliminate the recurring query database.
First, the introduction
One of the typical problems with database applications is updating stale data.
Imagine a typical E-commerce site that displays products and their classifications. A vendor's product list is likely to chang
recovered. Just now, all the default instances of all forms are unified under the My.Forms namespace (for example, My.Forms.Form2), changing the style of chaos in the VB6 (Oops, the Nose of Warcraft play has gone mad, hehe). However, you can still omit the preceding my.forms when writing code, such as you can write in Form2.vb:
Private Sub button1_click (ByVal sender as System.Object, ByVal e as System.EventArgs) _
Handles Button1.Click
Form1.text = "Hello my.forms"
End Sub
Haha, did you find
of all forms are now unified in My. under the Forms namespace (for example, My. forms. form2), changed the chaotic governance style in VB6 (Oops, wow, wow ). However, when writing code, you can still omit My. Forms. For example, you can write in Form2.vb as follows:Private Sub button#click (ByVal sender As System. Object, ByVal e As System. EventArgs )_Handles Button1.ClickForm1.Text = "Hello My. Forms"End SubHaha, have you found the feeling of VB6 again?As a matter of fact, when I fi
database source file (. mdf) to the data instance, which is quite handy for a machine changer operation. Attach to "database" right-click, as shown (Figure 4-1) (Fig. 4-1) In the interface that appears, select the "sqlserver.mdf" database file that is added in step 3 and then appear (Figure 4-2). (Fig. 4-2) When you click OK, the error hint, such as (Figure 4-3), this time, oneself can not cover oneself again, I really dish ah, do not understand very much ... (Fig. 4-3) Of course this tim
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