C# 如何在代码隐藏中使用绑定数据？

我有一系列的按钮来增加、显示和减少整数月份

编辑：一个更完整的示例

MainWindow.xaml

<Window x:Class="ABC.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:StackOverflow2"
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <local:ConvertMonth x:Key="ConvertMonth"/>
    </Window.Resources>
    <StackPanel>
        <Button Content="+" Name="btnAddMonth" Click="btnAddMonth_Click"/>
        <Button Content="{Binding ElementName=Month, Path=Value, Converter={StaticResource ConvertMonth}}"/>
        <Button Content="-" Name="btnMinusMonth" Click="btnMinusMonth_Click"/>

        <Button Content="Save Changes" Name=btnSaveChanges Click="btnSaveChanges_Click"/>
    </StackPanel>
</Window>

MainWindow.xaml.cs

using System;
using System.Globalization;
using System.Windows;
using System.Windows.Data;
using System.IO;

namespace ABC
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void btnSaveChanges_Click(object sender, RoutedEventArgs e)
        {
            var mm = ConvertMonth.GetMonth();
            DateTime date = new DateTime(mm);
        }

        public void btnAddMonth_Click(object sender, RoutedEventArgs e)
        {
            int h = Convert.ToInt16(btnMonth.Content.ToString());

            if (h < 12)
            {
                int x = h + 1;

                if (h < 9)
                {
                    btnMonth.Content = x.ToString();
                }

                else
                {
                    btnMonth.Content = x.ToString();
                }
            }
        }

        private void btnMinusMonth_Click(object sender, RoutedEventArgs e)
        {
            int h = Convert.ToInt16(btnMonth.Content.ToString());

            if (h > 1)
            {
                int x = h - 1;
                if (h < 11)
                {
                    btnMonth.Content = x.ToString();
                }

                else
                {
                    btnMonth.Content = x.ToString();
                }
            }
        }
    }

    public class ConvertMonth : IValueConverter
    {
        private static int _month;

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            object result = DependencyProperty.UnsetValue;

            if (value is double)
                result = DateTime.Now.AddMonths(System.Convert.ToInt32(value));

            DateTime d = System.Convert.ToDateTime(result);
            _month = d.Month;

            return result;
        }

        public static int GetMonth()
        {
            return _month;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}

---

根据您提供的内容，您可以更改此

public void btnSaveChanges_Click(object sender, RoutedEventArgs e)
{
    //use *int* value of month here
    //eg - updateMonth(/* value of {Binding Path=month} */);      
}

到

---

这回答了你的问题。根据注释，似乎+和-按钮与应包含整数的按钮内容不交互。

您需要告诉我们“月”在何处以及如何声明。“month”位于谁的路径上？“month”是int类型的本地声明…将进行编辑以显示更多细节。很公平，+按钮做什么？它是如何增加月份的？@GarryPass See update我有一个更新函数来调用代码，在代码中我需要得到int值。然后把numberOfMonths放在更新函数中……但是btnMonth.Content才是我真正想要的。

<Window x:Class="ABC.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:StackOverflow2"
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <local:ConvertMonth x:Key="ConvertMonth"/>
    </Window.Resources>
    <StackPanel>
        <Button Content="+" Name="btnAddMonth" Click="btnAddMonth_Click"/>
        <Button Content="{Binding ElementName=Month, Path=Value, Converter={StaticResource ConvertMonth}}"/>
        <Button Content="-" Name="btnMinusMonth" Click="btnMinusMonth_Click"/>

        <Button Content="Save Changes" Name=btnSaveChanges Click="btnSaveChanges_Click"/>
    </StackPanel>
</Window>

using System;
using System.Globalization;
using System.Windows;
using System.Windows.Data;
using System.IO;

namespace ABC
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void btnSaveChanges_Click(object sender, RoutedEventArgs e)
        {
            var mm = ConvertMonth.GetMonth();
            DateTime date = new DateTime(mm);
        }

        public void btnAddMonth_Click(object sender, RoutedEventArgs e)
        {
            int h = Convert.ToInt16(btnMonth.Content.ToString());

            if (h < 12)
            {
                int x = h + 1;

                if (h < 9)
                {
                    btnMonth.Content = x.ToString();
                }

                else
                {
                    btnMonth.Content = x.ToString();
                }
            }
        }

        private void btnMinusMonth_Click(object sender, RoutedEventArgs e)
        {
            int h = Convert.ToInt16(btnMonth.Content.ToString());

            if (h > 1)
            {
                int x = h - 1;
                if (h < 11)
                {
                    btnMonth.Content = x.ToString();
                }

                else
                {
                    btnMonth.Content = x.ToString();
                }
            }
        }
    }

    public class ConvertMonth : IValueConverter
    {
        private static int _month;

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            object result = DependencyProperty.UnsetValue;

            if (value is double)
                result = DateTime.Now.AddMonths(System.Convert.ToInt32(value));

            DateTime d = System.Convert.ToDateTime(result);
            _month = d.Month;

            return result;
        }

        public static int GetMonth()
        {
            return _month;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}

public void btnSaveChanges_Click(object sender, RoutedEventArgs e)
{
    //use *int* value of month here
    //eg - updateMonth(/* value of {Binding Path=month} */);      
}

public void btnSaveChanges_Click(object sender, RoutedEventArgs e)
{
    int numberOfMonths = Convert.ToInt32(btnMonth.Content);   
}