The filtertextboxextender control is used to filter the text box, so that the text box can only enter the set value. The input types include numbers, lowercaseletters, uppercaseletters, and customer.
First, let's look at an example:
1) Create an ASP. NET Ajax-enabled web project in Vs and name it filtertextboxextender1.
2) add four label labels and four textbox on the default. aspx page to enter numbers, lowercase letters, uppercase letters, and symbols.
CodeAs follows: 1 < ASP: Label ID = "Label1" Runat = "Server" Text = "Number" > </ ASP: Label >
2 < ASP: textbox ID = "Number" Runat = "Server" > </ ASP: textbox >
3 < BR />
4 < BR />
5 < ASP: Label ID = "Label2" Runat = "Server" Text = "Lowercaseletters" > </ ASP: Label >
6 < ASP: textbox ID = "Lowercaseletters" Runat = "Server" > </ ASP: textbox >
7 < BR />
8 < BR />
9 < ASP: Label ID = "Label3" Runat = "Server" Text = "Uppercaseletters" > </ ASP: Label >
10 < ASP: textbox ID = "Uppercaseletters" Runat = "Server" > </ ASP: textbox >
11 < BR />
12 < BR />
13 < ASP: Label ID = "Label4" Runat = "Server" Text = "Customer (+-= .)" > </ ASP: Label >
14 & Nbsp; & Nbsp; < ASP: textbox ID = "Customer" Runat = "Server" > </ ASP: textbox > < BR />
3) Add a filteredtextboxextender control to each text box on the page and set the corresponding properties.
The Code is as follows:
1 < C0: filteredtextboxextender ID = "Filteredtextboxextender1" Targetcontrolid = "Number" Filtertype = "Numbers" Runat = "Server" > </ C0: filteredtextboxextender >
2 < C0: filteredtextboxextender ID = "Filteredtextboxextender2" Targetcontrolid = "Lowercaseletters" Filtertype = "Lowercaseletters" Runat = "Server" > </ C0: filteredtextboxextender >
3 < C0: filteredtextboxextender ID = "Filteredtextboxextender3" Targetcontrolid = "Uppercaseletters" Filtertype = "Uppercaseletters" Runat = "Server" > </ C0: filteredtextboxextender >
4 < C0: filteredtextboxextender ID = "Filteredtextboxextender4" Targetcontrolid = "Customer" Filtertype = "Custom" Validchars = "+-= ." Runat = "Server" > </ C0: filteredtextboxextender >
5
Attribute description:
Targetcontrolid: enter a text box.
Filtertype: Specifies the input type. There are numbers, lowercaseletters, uppercaseletters, and customer.
Validchars: if it is set as customer in filtertype, you need to set some content you want to enter in this attribute.
4) press Ctrl + F5 to view the information in the browser.