ASP Web Server Controls.ppt

1、ASP Web Server Controls,Please use speaker notes for additional information!,Label Web Server ControlASP.NET Label Web Server Control,Label Web Server Control,Label Web Server ControlASP.NET Label Web Server ControlSimple example of a label control!,My code. Output Results of viewing source.,Label W

2、eb Server Control, Testing the Label Web Server ControlSub Page_LoadlblHeader.Text=“Testing the Label Web Server Control“lblDate.Text=“Today is: “ & now() End SubASP.NET, Testing the Label Web Server ControlASP.NETTesting the Label Web Server Control Today is: 6/24/2003 4:56:55 PM, Testing the Label

3、 Web Server ControlSub Page_LoadlblHeader.Text=“Testing the Label Web Server Control“lblDate.Text=“Today is: “ & now() End SubASP.NET,My code is shown here.,The output is shown here.,When you click on view source, you see the code below., Testing the Label Web Server ControlSub Page_Load(sender As O

4、bject, e As EventArgs)lblHeader.Text=“Testing the Label Web Server Control“lblDate.Text=“Today is: “ & now() End SubASP.NET,Label Web Server Control,Textbox Web Server ControlSub NameSub(sender As Object, e As EventArgs)lblGreet.text = “Hi, “ & txtFst.text & “ “ & txtLast.text End SubASP.NET Textbox

5、 Web Server ControlFirst Name Last Name ,Button & Textbox Web Server Controls,Textbox Web Server ControlASP.NET Textbox Web Server ControlFirst Name Last Name Hi, Susan Ash,List before I checked anything.,List after I checked the three components of my sentence.,Here I unclicked the horse and you ca

6、n see the sentence is simply jumped over the fence.,Now I clicked The dog and the sentence got reformed starting with the first clicked element and moving sequentially through the last clicked item., Make sentences using List ItemsSub makeSentence(sender As Object, e As EventArgs)dim ctmySentence.Te

7、xt=“Your sentence: “for ct =0 to phrases.Items.Count-1if phrases.Items(ct).Selected thenmySentence.Text=mySentence.Text & “ “ & phrases.Items(ct).Textend ifnext End SubSub clear(Source As Object, e As EventArgs)dim ptfor pt = 0 to phrases.Items.Count-1if phrases.Items(pt).Selected thenphrases.Items(

8、pt).Selected = Falseend ifnextmySentence.Text=“ End Sub,Each time this is executed, it checks all of the check boxes and concatenates each box that is checked to the mySentence structure.,This code clears by checking to see if the item is checked and if it is setting it to false. Obviously, I did no

9、t need to do the check, I could have just set them all to false.,Clears the sentence which is made up of the phrase Your sentence in a paragraph followed by the selected elements formed into the mySentence structure.,The mySentence structure is a paragraph that says Your sentence: followed by the se

10、ntence I put together.,The dog The cat The bird The fish The horse ran flew swam jumped trotted over the fence onto the railing into the rock down the hill into the tree into the cage up the stream,The event OnSelectedIndexChanged causes makeSentence to be executed.,This code sets up the elements in

11、 the list.,The label holds the sentence that was constructed.,A clear button is set up. The on click event causes the clearButton sub to be executed.,Your sentence: The horse jumped over the fence,The dog, Make sentences using List Items,The dog The cat The bird The fish The horse The duck The eleph

12、ant ran flew swam jumped trotted lumbered walked over the fence onto the railing into the rock down the hill into the tree into the cage up the stream,Changed code to get 3 vertical columns.,Added elements to the list of items., Make sentences using List ItemsFare TableFrom BostonFrom NYFrom DCTo Lo

13、ndon199189195To San Francisco245230295,Table Web Server Control,Continued on next slide.,To Baku535500490To Oslo420380410, TableSub getFare(sender As Object, e As EventArgs)dim strFare as stringdim intFromIndx as integerdim intToIndx as integerdim objRow as TableRowdim objCell as TableCellintFromInd

14、x = fromCity.SelectedIndexintToIndx = toCity.SelectedIndexobjRow = flyPrice.Rows.Item(intToIndx+1)objCell = objRow.Cells.Item(intFromIndx+1)strFare = objCell.TextyourFare.Text=“Your fare is: “ & strFare End SubFrom Boston From NY From DCTo London To San Francisco To Baku To Osloasp:Table runat=“serv

15、er“ id=“flyPrice“ BorderWidth=3 CellPadding=5 CellSpacing=5,fromCity.Selected Index means to tell which one was selected (0, 1, 2). This works the same with toCity.Selected Index, but there is one more entry.,Now I am going to the table with multiple rows (shown on next slide) and use intToIndx +1 b

16、ecause in this table I made the first row a header. After getting the Row, I then get the cell. I then store the text from the objCell as the strFare.,Here is where I develop the contents of yourFare which is the id of the label displayed in the next screen.,GridLines=“both“ HorizontalAlign=“Left“Fa

17、re TableFrom BostonFrom NYFrom DCTo London197189195To San Francisco245230295To Baku535500490To Oslo420380410,This shows the setup of the table and cells and the data contained. You can see the headers and the data.,I know use label to show the id of yourFare which was generated in the OnClick execution of getFare., TableFrom BostonFrom NYFrom DCTo LondonTo San FranciscoTo BakuTo OsloFare TableFrom BostonFrom NYFrom DCTo London197189195To San Francisco245230295To Baku535500490To Oslo420380410Your fare is: 245 ,