我有一个包含 10 个文本框的表单 (CustomerInfoForm)。每个 TextBoxes 的默认 Text 属性是在设计时定义的。子类 CustomerInfoForm.CustomerInfo 包含用于保存在表单中输入的数据的属性。包含数据的子类将序列化为 XML。

在自动生成的表单代码中，每个文本框都有一行代码将数据源绑定(bind)到文本框

this.customerInfoBindingSource = new System.Windows.Forms.BindingSource(this.components);

C# ide 为每个文本框自动生成的代码:

this.txtCustomer.DataBindings.Add(new System.Windows.Forms.Binding("Text", this.customerInfoForm_CustomerInfoBindingSource, "CustomerName", true));
this.txtCustomer.Location = new System.Drawing.Point(60, 23);
this.txtCustomer.Name = "txtCustomer";
this.txtCustomer.Size = new System.Drawing.Size(257, 20);
this.txtCustomer.TabIndex = 0;
this.txtCustomer.Text = "CustomerName";

(我注意到在 IDE 生成的代码中 Text 属性直到 DataBinding 之后才设置)。

当我运行该项目时，表单会在 TextBoxes 中显示默认值。但是，当按下 SaveButton 以序列化 MyForm.CustomerInfo 子类中的属性时，它们都是空的。由于这些值只会从表单更改，我希望我不必实现接口(interface) INotifyPropertyChanged。

我是否遗漏了一些基本的或简单的东西？

包含数据序列化的表单代码附在下面

using System;
using System.Windows.Forms;
using System.Xml.Serialization;
using System.IO;
using System.Runtime.Serialization;

namespace SimpleCustomerInfo
{
    // You must apply a DataContractAttribute or SerializableAttribute
    // to a class to have it serialized by the DataContractSerializer.

    public partial class CustomerInfoForm : Form
    {
        CustomerInfo ci = new CustomerInfo();

        public CustomerInfoForm()
        {
            InitializeComponent();
        }

        private void btnSave_Click(object sender, EventArgs e)
        {
            DataContractSerializer serializer = new DataContractSerializer(typeof(CustomerInfo));
            FileStream writer = new FileStream(@"C:\Users\Me\temp\testme.xml", FileMode.Create);
            serializer.WriteObject(writer,ci);
            writer.Close();
        }

        [DataContract(Name = "Customer", Namespace = "net.ElectronicCanvas")]
        public class CustomerInfo
        {
            [DataMember]
            public string CustomerName { get; set; }
            [DataMember]
            public PhoneInfo PhonePrimary { get; set; }
            [DataMember]
            public PhoneInfo PhoneDays { get; set; }
            [DataMember]
            public PhoneInfo PhoneEvening { get; set; }
        }

        public class PhoneInfo
        {
            public string number { get; set; }
            public string type { get; set; }
            public bool textOk { get; set; }
        }
    }
}

编辑——对于可能发生在这个问题上的其他人

using System;
using System.Windows.Forms;
using System.Xml.Serialization;
using System.IO;
using System.Runtime.Serialization;

namespace SimpleCustomerInfo
{


    public partial class CustomerInfoForm : Form
    {
        CustomerInfo ci;

        public CustomerInfoForm()
        {
            InitializeComponent();
            ci = new CustomerInfo();
            ci.CustomerName = "My Customer Name";
            ci.PhoneDays.number = "888-888-8888";
            customerInfoForm_CustomerInfoBindingSource.DataSource = ci;

        }

        private void btnSave_Click(object sender, EventArgs e)
        {

            DataContractSerializer serializer = new DataContractSerializer(typeof(CustomerInfo));
            FileStream writer = new FileStream(@"C:\Users\me\temp\testme.xml", FileMode.Create);
            serializer.WriteObject(writer,ci);
            writer.Close();
        }
        // You must apply a DataContractAttribute or SerializableAttribute
        // to a class to have it serialized by the DataContractSerializer.
        [DataContract(Name = "Customer", Namespace = "net.ElectronicCanvas")]
        public class CustomerInfo
        {
            [DataMember]
            public string CustomerName { get; set; }
            [DataMember]
            public PhoneInfo PhonePrimary { get; set; }
            [DataMember]
            public PhoneInfo PhoneDays { get; set; }
            [DataMember]
            public PhoneInfo PhoneEvening { get; set; }

            // Constructor is needed to instantiate the PhoneInfo classes
            // within the CustomerInfo class
            public CustomerInfo()
            {
                PhonePrimary = new PhoneInfo();
                PhoneDays = new PhoneInfo();
                PhoneEvening = new PhoneInfo();
            }
        }

        public class PhoneInfo
        {
            public string number { get; set; }
            public string type { get; set; }
            public bool textOk { get; set; }
        }
    }
}

最佳答案

首先您需要决定是使用数据绑定(bind)还是直接操作Text 属性。这两种方法不应混合在一起。

如果你想使用数据绑定(bind)而不是代码中缺少一行:

public Form1()
{
    InitializeComponent();
    customerInfoBindingSource.DataSource = ci;  // This is the missing line
}

您需要让您的 customerInfoBindingSource 知道数据源。

如果添加此行，那么在设计时分配的 Text 将被绑定(bind)数据源中的文本覆盖。如果您想使用绑定(bind)，您应该使用数据源进行操作，而不是直接设置 Text 字段。像这样:

public Form1()
{
    InitializeComponent();

    ci.CustomerName = "TestCustomerName";
    customerInfoBindingSource.DataSource = ci;
}

关于c# - 数据绑定(bind)到 WinForm，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/6393819/