问题描述
我在Visual Studio中使用C#作为生产工厂的订购系统编写了Windows窗体应用程序。我正在尝试实施一个SAP Web服务来为仓库创建转储单,以了解要交付的物料。
我使用Visual Studio 2017的本机“添加服务参考”来导入WSDL。 我已经在SOAP中测试了Web服务,并且可以正常工作。
我正在尝试添加必填字段,数量字段具有单位代码。在SOAP中看起来像这样。
<RequiredQuantity unitCode="PCE">10</RequiredQuantity>
在Visual Studio中,我实例化了我的转储单和请求,并尝试添加参数,但是我一直在获取对象引用未设置为对象实例的情况。
private void btnOrderPallet_Click_1(object sender,EventArgs e) //ops leader tab
{
if (Properties.Settings.Default.UseWebServices == "Yes")
{
try
{
QOE_CreateTO.TransferOrderCreate_InClient transferOrder = new QOE_CreateTO.TransferOrderCreate_InClient("HTTP_Basic_soap12");
transferOrder.ClientCredentials.UserName.UserName = "blah blah";
transferOrder.ClientCredentials.UserName.Password = "blah blah 123";
QOE_CreateTO.TransferOrderCreateRequest toRequest = new QOE_CreateTO.TransferOrderCreateRequest();
//working
toRequest.WarehouseID = "98W";
toRequest.MaterialNumberID = "7516000796";
toRequest.PlantID = "982W";
toRequest.StorageLocationID = "ADPP";
//not working
toRequest.RequiredQuantity.unitCode = "PCE";
toRequest.RequiredQuantity.Value = 10;
//not working either
var qty = toRequest.RequiredQuantity.Value;
var uc = toRequest.RequiredQuantity.unitCode;
qty = 10;
uc = "PCE";
toRequest.RequiredQuantity.unitCode = uc;
toRequest.RequiredQuantity.Value = qty;
//not working either
var rQty = toRequest.RequiredQuantity;
rQty.Value = Convert.ToDecimal(10);
rQty.unitCode = "PCE";
toRequest.RequiredQuantity = rQty;
//working
toRequest.SourceStorageTypeID = "801";
toRequest.SourceStorageBinID = "02-01-01";
toRequest.DestinationStorageTypeID = "PSA";
toRequest.DestinationStorageBinID = "PSA_REMAN";
toRequest.UnloadingPointName = "Reman Line";
toRequest.MovementTypeCode = "919";
toRequest.AutoCreationIndicator = true;
transferOrder.CreateTransferOrder(toRequest);
}
catch (Exception ex)
{
Log.Error(...);
}
}
else
{
}
}
感谢@JHBonarius请求提供更多详细信息,这是对象浏览器中的get / setter。
public partial class RequiredQuantity : object,System.ComponentModel.INotifyPropertyChanged {
private string unitCodeField;
private decimal valueField;
/// <remarks/>
[System.Xml.Serialization.XmlAttributeAttribute(DataType="token")]
public string unitCode {
get {
return this.unitCodeField;
}
set {
this.unitCodeField = value;
this.RaisePropertyChanged("unitCode");
}
}
/// <remarks/>
[System.Xml.Serialization.XmlTextAttribute()]
public decimal Value {
get {
return this.valueField;
}
set {
this.valueField = value;
this.RaisePropertyChanged("Value");
}
}
public event System.ComponentModel.PropertyChangedEventHandler PropertyChanged;
protected void RaisePropertyChanged(string propertyName) {
System.ComponentModel.PropertyChangedEventHandler propertyChanged = this.PropertyChanged;
if ((propertyChanged != null)) {
propertyChanged(this,new System.ComponentModel.PropertyChangedEventArgs(propertyName));
}
}
}
并来自Public局部类:
/// <remarks/>
[System.Xml.Serialization.XmlElementAttribute(Form=System.Xml.Schema.XmlSchemaForm.Unqualified,Order=4)]
public RequiredQuantity RequiredQuantity {
get {
return this.requiredQuantityField;
}
set {
this.requiredQuantityField = value;
this.RaisePropertyChanged("RequiredQuantity");
}
}
任何帮助将不胜感激。
解决方法
看起来WSDL创建为您要设置的属性创建了一个“对象”。
public partial class RequiredQuantity : object
这似乎表明您需要实例化该对象,然后才能分配给它包含的属性。
尝试:
//set object first
toRequest.RequiredQuantity = new RequiredQuantity();
toRequest.RequiredQuantity.unitCode = "PCE";
toRequest.RequiredQuantity.Value = 10;
,或者如果它不能解析新引用,请使用内置工具来跟踪该对象所在的名称空间。然后,这应该允许您设置属性。发生的情况似乎是您试图设置未实例化对象的子属性,因此出现了“对象未设置错误”。
其他类起作用,因为它们是简单的字符串并且不包含子对象,因此WSDL创建者可以将它们设置为简单的基本类型。这个比较复杂,因此需要在分配之前创建。