[英]Maintain Session While Calling an ASMX Web Service
I am using a client app to connect to a web service for authenticated user only. 我正在使用客户端应用程序仅为经过身份验证的用户连接到Web服务。 Here is simplest example: 这是最简单的例子:
My web service code: 我的网络服务代码:
public class TestService : System.Web.Services.WebService
{
[WebMethod(EnableSession = true)]
public string WelcomeMsg()
{
return "Hello: " + Session["UserName"] + "! Welcome to our store.";
}
[WebMethod(EnableSession = true)]
public void SetUserName(string sName)
{
Session["UserName"] = sName;
}
}
Here is my code on client app (Windows form, not web base): 这是我在客户端应用程序上的代码(Windows窗体,而不是Web基础):
private void btnSetName_Click(object sender, EventArgs e)
{
TestService.TestService ws = new TestService.TestService(); //Create a web service
MainForm.m_ccSessionInfo = new System.Net.CookieContainer(); //Create a CookieContainer
ws.CookieContainer = MainForm.m_ccSessionInfo; //Set CookieContainer of the web service
ws.SetUserName(txtUserName.Text); //Set value of session
ws = null;
}
private void btnWelcome_Click(object sender, EventArgs e)
{
TestService.TestService ws = new TestService.TestService(); //Create a web service
ws.CookieContainer = MainForm.m_ccSessionInfo; //Set CookieContainer back
string sWelcome = ws.WelcomeMsg(); //Get value from session property
ws = null;
System.Diagnostics.Debug.WriteLine(sWelcome);
}
In my example MainForm.m_ccSessionInfo is a static member, I want to keep the session cookies value in this one! 在我的示例中,MainForm.m_ccSessionInfo是一个静态成员,我想在此会话中保留会话cookie值!
However, it don't work :( . The ws.WelcomeMsg() is always return an empty string. 但是,它不起作用:(。ws.WelcomeMsg()总是返回一个空字符串。
Oops, I think I've just found the solution for this problem. 哎呀,我想我刚刚找到了这个问题的解决方案。 The CookieContainer is created by server and must be kept at client app. CookieContainer由服务器创建,必须保存在客户端应用程序中。 On btnSetName_Click, I change 在btnSetName_Click上,我改变了
MainForm.m_ccSessionInfo = new System.Net.CookieContainer(); //Create a CookieContainer
ws.CookieContainer = MainForm.m_ccSessionInfo; //Set CookieContainer of the web service
into 成
ws.CookieContainer = new System.Net.CookieContainer(); //Create a CookieContainer
MainForm.m_ccSessionInfo = ws.CookieContainer; //Keep CookieContainer for later using
And it works well now! 它现在运作良好! Thanks you all. 谢谢大家。
try below 试试下面
private void btnWelcome_Click(object sender, EventArgs e)
{
TestService.TestService ws = new TestService.TestService(); //Create a web service
ws.SetUserName(txtUserName.Text);
string sWelcome = ws.WelcomeMsg();
System.Diagnostics.Debug.WriteLine(sWelcome);
}
When calling btnSetName_Click method and btnWelcome_Click click webs ervice consider your reqwests as new sessions. 当调用btnSetName_Click方法和btnWelcome_Click单击网络服务时,请将您的需求视为新会话。
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