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博客园 - 水色天空

用docfx生成c#项目API的简洁教程 wpf datagrid鼠标穿透 OxyPloot设置X轴时间DateTimeAxis WPF中MVVM模式下ComboBox绑定,无法更新selectedItem的解决方案 WPF设置DatePicker日期格式之卡Bug大法 WPF程序自动重启 InstallShield打包.net项目无法包含数据库、配置文件等 DataGrid代码生成列居中问题 Chapter 2 - Sockets and Patterns【选译,哈哈】 Part 9 High-Water Marks Chapter 2 - Sockets and Patterns【选译,哈哈】 Part 9 Missing Message Problem Solver Chapter 2 - Sockets and Patterns【选译,哈哈】 Part 9 Zero-Copy Chapter 2 - Sockets and Patterns【选译,哈哈】 Part 8 Node Coordination Chapter 2 - Sockets and Patterns【选译,哈哈】 Part 6 Multithreading with ZeroMQ Chapter 2 - Sockets and Patterns【选译,哈哈】 Part 7 Signaling Between Threads (PAIR Sockets) Chapter 2 - Sockets and Patterns【选译,哈哈】 Part 5 Handling Interrupt Signals WPF绑定RadioButton的标准做法 解决.net reactor加密后的dll,在其它电脑无法运行的问题 函数返回值的一些规则 Chapter 2 - Sockets and Patterns【选译,哈哈】 Part 4 Handling Errors and ETERM
handycontrol中NumericUpDown无法显示自定义错误提示的解决办法
水色天空 · 2021-11-24 · via 博客园 - 水色天空

最新的版本,好像是3.2.

NumericUpDown控件设置了ErrorStr属性,不管是否带hc名称空间,设置的字符串都不会生效,看了下源码,修改了NumericUpDown.cs中的一句,如下:

官方源码

public virtual bool VerifyData()
        {
            OperationResult<bool> result;

            if (VerifyFunc != null)
            {
                result = VerifyFunc.Invoke(_textBox.Text);
            }
            else
            {
                if (!string.IsNullOrEmpty(_textBox.Text))
                {
                    if (double.TryParse(_textBox.Text, out var value))
                    {
                        if (value < Minimum || value > Maximum)
                        {
                            result = OperationResult.Failed(Properties.Langs.Lang.OutOfRange);
                        }
                        else
                        {
                            result = OperationResult.Success();
                        }
                    }
                    else
                    {
                        result = OperationResult.Failed(Properties.Langs.Lang.FormatError);
                    }
                }
                else if (InfoElement.GetNecessary(this))
                {
                    result = OperationResult.Failed(Properties.Langs.Lang.IsNecessary);
                }
                else
                {
                    result = OperationResult.Success();
                }
            }

            SetCurrentValue(ErrorStrProperty, result.Message);
            SetCurrentValue(IsErrorProperty, ValueBoxes.BooleanBox(!result.Data));
            return result.Data;
        }

修改后

public virtual bool VerifyData()
        {
            OperationResult<bool> result;

            if (VerifyFunc != null)
            {
                result = VerifyFunc.Invoke(_textBox.Text);
            }
            else
            {
                if (!string.IsNullOrEmpty(_textBox.Text))
                {
                    if (double.TryParse(_textBox.Text, out var value))
                    {
                        if (value < Minimum || value > Maximum)
                        {
                            result = OperationResult.Failed($"范围{Minimum}-{Maximum}");
                        }
                        else
                        {
                            result = OperationResult.Success();
                        }
                    }
                    else
                    {
                        result = OperationResult.Failed(Properties.Langs.Lang.FormatError);
                    }
                }
                else if (InfoElement.GetNecessary(this))
                {
                    result = OperationResult.Failed(Properties.Langs.Lang.IsNecessary);
                }
                else
                {
                    result = OperationResult.Success();
                }
            }

            SetCurrentValue(ErrorStrProperty, result.Message);
            SetCurrentValue(IsErrorProperty, ValueBoxes.BooleanBox(!result.Data));
            return result.Data;
        }