HTTP GET in VB NET

Question

What is the best way to issue a http get in VB net  I want to get the result of a request like http   api hostip info  ip 68 180 206 184

User · Accepted Answer

In VB NET   Dim webClient As New System Net WebClient Dim result As String   webClient DownloadString  http   api hostip info  ip 68 180 206 184     In C    System Net WebClient webClient   new System Net WebClient    string result   webClient DownloadString  http   api hostip info  ip 68 180 206 184

User · Answer

You can use the HttpWebRequest class to perform a request and retrieve a response from a given URL  You ll use it like   Try     Dim fr As System Net HttpWebRequest     Dim targetURI As New Uri  http   whatever you want to get file html                 fr   DirectCast HttpWebRequest Create targetURI   System Net HttpWebRequest      If  fr GetResponse   ContentLength  gt  0  Then         Dim str As New System IO StreamReader fr GetResponse   GetResponseStream            Response Write str ReadToEnd            str Close         End If    Catch ex As System Net WebException     Error in accessing the resource  handle it End Try   HttpWebRequest is detailed at  http   msdn microsoft com en-us library system net httpwebrequest aspx  A second option is to use the WebClient class  this provides an easier to use interface for downloading web resources but is not as flexible as HttpWebRequest   Sub Main        Address of URL     Dim URL As String   http   whatever com       Get HTML data     Dim client As WebClient   New WebClient       Dim data As Stream   client OpenRead URL      Dim reader As StreamReader   New StreamReader data      Dim str As String          str   reader ReadLine       Do While str Length  gt  0         Console WriteLine str          str   reader ReadLine       Loop End Sub   More info on the webclient can be found at  http   msdn microsoft com en-us library system net webclient aspx

User · Answer

You can use the HttpWebRequest class to perform a request and retrieve a response from a given URL  You ll use it like   Try     Dim fr As System Net HttpWebRequest     Dim targetURI As New Uri  http   whatever you want to get file html                 fr   DirectCast HttpWebRequest Create targetURI   System Net HttpWebRequest      If  fr GetResponse   ContentLength  gt  0  Then         Dim str As New System IO StreamReader fr GetResponse   GetResponseStream            Response Write str ReadToEnd            str Close         End If    Catch ex As System Net WebException     Error in accessing the resource  handle it End Try   HttpWebRequest is detailed at  http   msdn microsoft com en-us library system net httpwebrequest aspx  A second option is to use the WebClient class  this provides an easier to use interface for downloading web resources but is not as flexible as HttpWebRequest   Sub Main        Address of URL     Dim URL As String   http   whatever com       Get HTML data     Dim client As WebClient   New WebClient       Dim data As Stream   client OpenRead URL      Dim reader As StreamReader   New StreamReader data      Dim str As String          str   reader ReadLine       Do While str Length  gt  0         Console WriteLine str          str   reader ReadLine       Loop End Sub   More info on the webclient can be found at  http   msdn microsoft com en-us library system net webclient aspx

User · Answer

You should try the HttpWebRequest class

User · Answer

Public Function getLoginresponce ByVal email As String  ByVal password As String  As String     Dim requestUrl As String    your api      Dim request As HttpWebRequest   TryCast WebRequest Create requestUrl   HttpWebRequest      Dim response As HttpWebResponse   TryCast request GetResponse    HttpWebResponse      Dim dataStream As Stream   response GetResponseStream       Dim reader As New StreamReader dataStream      Dim responseFromServer As String   reader ReadToEnd       Dim result   responseFromServer     reader Close       response Close       Return result End Function

User · Answer

Use the WebRequest class  This is to get an image   Try     Dim  WebRequest As System Net WebRequest   Nothing      WebRequest   System Net WebRequest Create http   api hostip info  ip 68 180 206 184  Catch ex As Exception     Windows Forms MessageBox Show ex Message      Exit Sub End Try  Try      NormalImage   Image FromStream  WebRequest GetResponse   GetResponseStream    Catch ex As Exception     Windows Forms MessageBox Show ex Message      Exit Sub End Try

User · Answer

Use the WebRequest class  This is to get an image   Try     Dim  WebRequest As System Net WebRequest   Nothing      WebRequest   System Net WebRequest Create http   api hostip info  ip 68 180 206 184  Catch ex As Exception     Windows Forms MessageBox Show ex Message      Exit Sub End Try  Try      NormalImage   Image FromStream  WebRequest GetResponse   GetResponseStream    Catch ex As Exception     Windows Forms MessageBox Show ex Message      Exit Sub End Try

User · Answer

Use the WebRequest class  This is to get an image   Try     Dim  WebRequest As System Net WebRequest   Nothing      WebRequest   System Net WebRequest Create http   api hostip info  ip 68 180 206 184  Catch ex As Exception     Windows Forms MessageBox Show ex Message      Exit Sub End Try  Try      NormalImage   Image FromStream  WebRequest GetResponse   GetResponseStream    Catch ex As Exception     Windows Forms MessageBox Show ex Message      Exit Sub End Try

User · Answer

You should try the HttpWebRequest class

User · Answer

Try this   WebRequest request   WebRequest CreateDefault RequestUrl   request Method    GET    WebResponse response  try   response   request GetResponse      catch  WebException exc    response   exc Response     if  response    null      throw new HttpException  int HttpStatusCode NotFound   The requested url could not be found      using StreamReader reader   new StreamReader response GetResponseStream           string requestedText   reader ReadToEnd            do what you want with requestedText     Sorry about the C   I know you asked for VB  but I didn t have time to convert

User · Answer

Public Function getLoginresponce ByVal email As String  ByVal password As String  As String     Dim requestUrl As String    your api      Dim request As HttpWebRequest   TryCast WebRequest Create requestUrl   HttpWebRequest      Dim response As HttpWebResponse   TryCast request GetResponse    HttpWebResponse      Dim dataStream As Stream   response GetResponseStream       Dim reader As New StreamReader dataStream      Dim responseFromServer As String   reader ReadToEnd       Dim result   responseFromServer     reader Close       response Close       Return result End Function

User · Answer

The easiest way is System Net WebClient DownloadFile or DownloadString

User · Answer

The easiest way is System Net WebClient DownloadFile or DownloadString

User · Answer

Use the WebRequest class  This is to get an image   Try     Dim  WebRequest As System Net WebRequest   Nothing      WebRequest   System Net WebRequest Create http   api hostip info  ip 68 180 206 184  Catch ex As Exception     Windows Forms MessageBox Show ex Message      Exit Sub End Try  Try      NormalImage   Image FromStream  WebRequest GetResponse   GetResponseStream    Catch ex As Exception     Windows Forms MessageBox Show ex Message      Exit Sub End Try

User · Answer

Try this   WebRequest request   WebRequest CreateDefault RequestUrl   request Method    GET    WebResponse response  try   response   request GetResponse      catch  WebException exc    response   exc Response     if  response    null      throw new HttpException  int HttpStatusCode NotFound   The requested url could not be found      using StreamReader reader   new StreamReader response GetResponseStream           string requestedText   reader ReadToEnd            do what you want with requestedText     Sorry about the C   I know you asked for VB  but I didn t have time to convert

User · Answer

Try this   WebRequest request   WebRequest CreateDefault RequestUrl   request Method    GET    WebResponse response  try   response   request GetResponse      catch  WebException exc    response   exc Response     if  response    null      throw new HttpException  int HttpStatusCode NotFound   The requested url could not be found      using StreamReader reader   new StreamReader response GetResponseStream           string requestedText   reader ReadToEnd            do what you want with requestedText     Sorry about the C   I know you asked for VB  but I didn t have time to convert

User · Answer

You should try the HttpWebRequest class

User · Answer

You can use the HttpWebRequest class to perform a request and retrieve a response from a given URL  You ll use it like   Try     Dim fr As System Net HttpWebRequest     Dim targetURI As New Uri  http   whatever you want to get file html                 fr   DirectCast HttpWebRequest Create targetURI   System Net HttpWebRequest      If  fr GetResponse   ContentLength  gt  0  Then         Dim str As New System IO StreamReader fr GetResponse   GetResponseStream            Response Write str ReadToEnd            str Close         End If    Catch ex As System Net WebException     Error in accessing the resource  handle it End Try   HttpWebRequest is detailed at  http   msdn microsoft com en-us library system net httpwebrequest aspx  A second option is to use the WebClient class  this provides an easier to use interface for downloading web resources but is not as flexible as HttpWebRequest   Sub Main        Address of URL     Dim URL As String   http   whatever com       Get HTML data     Dim client As WebClient   New WebClient       Dim data As Stream   client OpenRead URL      Dim reader As StreamReader   New StreamReader data      Dim str As String          str   reader ReadLine       Do While str Length  gt  0         Console WriteLine str          str   reader ReadLine       Loop End Sub   More info on the webclient can be found at  http   msdn microsoft com en-us library system net webclient aspx

User · Answer

The easiest way is System Net WebClient DownloadFile or DownloadString

User · Answer

Try this   WebRequest request   WebRequest CreateDefault RequestUrl   request Method    GET    WebResponse response  try   response   request GetResponse      catch  WebException exc    response   exc Response     if  response    null      throw new HttpException  int HttpStatusCode NotFound   The requested url could not be found      using StreamReader reader   new StreamReader response GetResponseStream           string requestedText   reader ReadToEnd            do what you want with requestedText     Sorry about the C   I know you asked for VB  but I didn t have time to convert

User · Answer

You can use the HttpWebRequest class to perform a request and retrieve a response from a given URL  You ll use it like   Try     Dim fr As System Net HttpWebRequest     Dim targetURI As New Uri  http   whatever you want to get file html                 fr   DirectCast HttpWebRequest Create targetURI   System Net HttpWebRequest      If  fr GetResponse   ContentLength  gt  0  Then         Dim str As New System IO StreamReader fr GetResponse   GetResponseStream            Response Write str ReadToEnd            str Close         End If    Catch ex As System Net WebException     Error in accessing the resource  handle it End Try   HttpWebRequest is detailed at  http   msdn microsoft com en-us library system net httpwebrequest aspx  A second option is to use the WebClient class  this provides an easier to use interface for downloading web resources but is not as flexible as HttpWebRequest   Sub Main        Address of URL     Dim URL As String   http   whatever com       Get HTML data     Dim client As WebClient   New WebClient       Dim data As Stream   client OpenRead URL      Dim reader As StreamReader   New StreamReader data      Dim str As String          str   reader ReadLine       Do While str Length  gt  0         Console WriteLine str          str   reader ReadLine       Loop End Sub   More info on the webclient can be found at  http   msdn microsoft com en-us library system net webclient aspx

User · Answer

You should try the HttpWebRequest class

User · Answer

The easiest way is System Net WebClient DownloadFile or DownloadString

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