C# 读取XML响应Web服务
我对.NETWeb服务编程非常陌生。我在从web服务读取XML响应到客户端时遇到了麻烦 在我的Web服务端:Service1.asmx.cs代码:C# 读取XML响应Web服务,c#,webservice-client,C#,Webservice Client,我对.NETWeb服务编程非常陌生。我在从web服务读取XML响应到客户端时遇到了麻烦 在我的Web服务端:Service1.asmx.cs代码: [WebMethod(Description = "substruction")] public double subtract(double i, double j) { return i - j; } [WebMethod(Description = "getxml")] pub
[WebMethod(Description = "substruction")]
public double subtract(double i, double j)
{
return i - j;
}
[WebMethod(Description = "getxml")]
public XmlDocument GetXML()
{
StringBuilder sb = new StringBuilder();
XmlWriter writer = XmlWriter.Create(sb);
writer.WriteStartDocument();
writer.WriteStartElement("People");
writer.WriteStartElement("Person");
writer.WriteAttributeString("Name", "Nick");
writer.WriteEndElement();
writer.WriteStartElement("Person");
writer.WriteStartAttribute("Name");
writer.WriteValue("Kevin");
writer.WriteEndAttribute();
writer.WriteEndElement();
writer.WriteEndElement();
writer.WriteEndDocument();
writer.Flush();
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.LoadXml(sb.ToString());
return xmlDocument;
}
在这里,我创建了两个方法来测试响应。在GetXML中,我创建了一个非常简单的XML,并将包XML返回给客户端
在我的客户端:
// Add button click function
protected void Button1_Click(object sender, EventArgs e)
{
string selectFlag = selectOper.Value;
localhost.Service1 web = new localhost.Service1(); // Have to be the same name as youre Service1.
if (selectFlag.Equals("+"))
{
Result.Text = (web.addition(double.Parse(Num1.Text), double.Parse(Num2.Text))).ToString();
}
else if (selectFlag.Equals("-"))
{
Result.Text = (web.subtract(double.Parse(Num1.Text), double.Parse(Num2.Text))).ToString();
}
}
protected void Button2_Click(object sender, EventArgs e)
{
localhost.Service1 web2 = new localhost.Service1(); // Can u please do not be so silly, use different instance name here.
Button clickedButton = (Button)sender;
XmlDocument xmltest = new XmlDocument();
xmltest = web2.GetXML();
您可以看到,我试图获取web2.GetXML()并将整个XML转换为XmlDoucment。然而,它说错误1不能隐式地将类型“object”转换为“System.Xml.XmlDocument”。存在显式转换(是否缺少转换?)C:\Documents and Settings\qili\My Documents\Downloads\WebService3\WebService2\WebService2\Default.aspx.cs 39 24 WebService2
任何提示,我想我做错了什么。但Buttom1_Click方法运行良好 尝试转换服务的响应:
protected void Button2_Click(object sender, EventArgs e)
{
localhost.Service1 web2 = new localhost.Service1(); // Can u please do not be so silly, use different instance name here.
Button clickedButton = (Button)sender;
XmlDocument xmltest = new XmlDocument();
xmltest = (XmlDocument)web2.GetXML();
}
您应该尝试删除服务引用,重新运行服务,然后在客户机上添加服务引用。是否使用调试器检查了GetXML()返回的实际类型?另外,在下一行替换XmlDocument时,不需要初始化新的XmlDocument实例。您可以尝试显式强制转换它xmltext=(XmlDocument)web2.GetXML()您是否已将
公共对象GetXML()
更改为公共XmlDocument GetXML()
?如果需要添加对服务的引用,那么它已经是公共的XmlDocument GetXML()XmlDocument了;用户代码未处理NotImplementedException。在xmltest=(XmlDocument_web2.GetXML())中,您应该调试是否能够访问代码。我试图调试它。我无法通过使用直接访问XML,但可以单击“调用”以获得访问权限