c# - 无法将 Type 1 隐式转换为 Type 1

Question

这将是我在 stackoverflow 上提出的第一个问题，所以请多多包涵。

这是我得到的错误错误 CS0029:无法将类型“Sales.Mhebe.Data.Contact”隐式转换为“Contact”。 现在，如果我还没有与其他 3 个类(class)一起完成，这就不会那么奇怪了。即)Sales.Mhebe.Data.Employee 到 Employee。非常感谢任何指导。

protected void PopulateContactFields()
{
    string contactID = FKContactIDTextBox.Text;
    if (contactID == "")
    {
        MessageLabel.Text = "Please Select a Sales Person ID";
        ClearFields();
        DetailPanel.Visible = false;

    }
    else
    {
        ContactController contactControllers = new ContactController();
        try
        {
            int lookupContact = int.Parse(contactID);
            Contact contacts = contactControllers.LookupContact(lookupContact);
            if (contacts == null)
            {
                MessageLabel.Text = "Contact" + lookupContact + " not found";
                DetailPanel.Visible = false;
                ClearFields();
            }
            else
            {
                PKContactIDTextBox.Text = contacts.ContactID.ToString();
                NameStyleTextBox.Text = contacts.NameStyle;
                ContactTitleTextBox.Text = contacts.Title;
                FirstNameTextBox.Text = contacts.FirstName;
                MiddleNameTextBox.Text = contacts.MiddleName;
                LastNameTextBox.Text = contacts.LastName;
                SuffixTextBox.Text = contacts.Suffix;
                EmailAddressTextBox.Text = contacts.EmailAddress;
                EmailPromotionTextBox.Text = contacts.EmailPromotion.ToString();
                PhoneTextBox.Text = contacts.Phone;
                PasswordSaltTextBox.Text = contacts.PasswordSalt;
                PasswordHashTextBox.Text = contacts.PasswordHash;
                AdditionalInfoTextBox.Text = contacts.AdditionalContactInfo;
                ContactRowGuidTextBox.Text = contacts.RowGuid.ToString();
                ContactModifiedDateTextBox.Text = contacts.ModifiedDate.ToString();
            }
        }
        catch (Exception ex)
        {
            MessageLabel.Text = "Error Populating Contact Fields with exception " + ex.Message;
            DetailPanel.Visible = false;

        }
    }

}    

错误出在联系人 contacts = contactControllers.LookupContact(lookupContact);

如果您需要说出任何其他类的联系方式，请告诉我。

Answer 1

namespace 中的 Contact 类不是 Sales.Mhebe.Data.Contact，将对象分配给 Sales.Mhebe.Data.Contact 将消除错误

Sales.Mhebe.Data.Contact  contacts = contactControllers.LookupContact(lookupContact);

如果您想将 Sales.Mhebe.Data.Contact 分配给其他 Contact 类，那么您可以使用 Sales.Mhebe.Data 创建 Contact 类的对象.联系方式

Sales.Mhebe.Data.Contact  salescontacts = contactControllers.LookupContact(lookupContact);
Sales.Mhebe.Data.Contact  contacts = new Contact{ContactPublicProperty1 = salescontacts.Property1, ContactPublicProperty2 =  salescontacts.Property2}