Lm th? no ? s? d?ng tham s? PostData ki?m sot WebBrowser

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ID c?a bi: 174923 - Xem s?n ph?m m bi ny p d?ng vo.
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Tm t?t

Ki?m sot WebBrowser c m?t phng php i?u h?ng v?i PostData nh m?t tham s?.i?u ny cho php ng?i dng ? g?i d? li?u ?n URL ?c ch? ?nh v?i WebBrowsercontrol.

Thng tin thm

i?u h?ng thng s? k? thu?t:
i?u h?ng cc ngu?n l?c ?c xc ?nh b?i m?t Universal Resource Locator (URL), ho?c cc t?p tin ?c xc ?nh b?i m?t ?ng d?n ?y ?.

C php:
   object.Navigate URL [Flags,] [TargetFrameName,] [PostData,] [Headers]
				

PostData ty ch?n:

D? li?u g?i ?n my ch? trong cc giao d?ch c?a HTTP bi. V d?: giao d?ch bi ?c s? d?ng ? g?i d? li?u thu th?p b?i m?t h?nh th?c HTML. N?u thisparameter khng xc ?nh b?t k? ng d? li?u, i?u h?ng cc v?n ? phng php anHTTP nh?n ?c giao d?ch. Tham s? ny ?c b? qua n?u URL khng ph?i l m?t URL HTTP.

Lu ?: ng d? li?u ?c ch? ?nh b?i PostData ?c thng qua nh l m?t SAFEARRAYstructure. Cc bi?n th? nn lo?i VT_ARRAY v tr? ?n m?t SAFEARRAY.SAFEARRAY nn lo?i y?u t? VT_UI1, kch th?c, v c anelement ?c tnh b?ng s? byte d? li?u bi.

M?u ? PostData URL h? ph?c v?

  1. B?t ?u Visual Basic. N?u Visual Basic ang ch?y, ch?n d? n m?i t? tr?nh n t?p (ALT, F, N). Form1 ?c t?o ra theo m?c ?nh.
  2. Thm m?t i?u khi?n WebBrowser (WebBrowser1) vo Form1.
  3. Thm m?t CommandButton (Command1) vo Form1.
  4. Thm m? sau y ? cc s? ki?n Command1_Click c?a Form1:
          Sub Command1_Click()
             Dim URL As String
             Dim Flags As Long
             Dim TargetFrame As String
             Dim PostData() As Byte
             Dim Headers As String
    
             URL = "http://YourServer" ' A URL that will accept a POST
             Flags = 0
             TargetFrame = ""
    
             PostData = "Information sent to host"
    
             ' VB creates a Unicode string by default so we need to
             ' convert it back to Single byte character set.
             PostData = StrConv(PostData, vbFromUnicode)
    
             Headers = "Content-Type: application/x-www-form-urlencoded" & _
                vbCrlf
             WebBrowser1.Navigate URL, Flags, TargetFrame, PostData, Headers
          End Sub
    
    						
  5. B?m phm F5 ? ch?y chng tr?nh v cc thng tin trong bi?n PostData s? ?c g?i ?n my ch? ?c ch? ?nh trong tham s? URL.

Thu?c tnh

ID c?a bi: 174923 - L?n xem xt sau cng: 03 Thang Ba 2014 - Xem xt l?i: 3.0
p d?ng
  • Microsoft Visual Basic 6.0 Professional Edition
  • Microsoft Visual Basic 5.0 Enterprise Edition
  • Microsoft Visual Basic 5.0 Control Creation Edition
  • Microsoft Internet Client Software Development Kit 4.01
T? kha:
kbhowto kbmt KB174923 KbMtvi
My d?ch
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