启动窗体自动输入上次内容——CAD c#二次开发

 

 上面红色框中两个文件，若不存在或内容不规范，需要修改如下：

Settings.cs：

namespace IfoxDemo.Properties
{[global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()][global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "17.9.0.0")]internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase{private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));public static Settings Default => defaultInstance;[global::System.Configuration.UserScopedSettingAttribute()][global::System.Diagnostics.DebuggerNonUserCodeAttribute()]public string TB1 {get => ((string)(this["TB1"]));set => this["TB1"] = value;}[global::System.Configuration.UserScopedSettingAttribute()][global::System.Diagnostics.DebuggerNonUserCodeAttribute()]public string TB2 {get => ((string)(this["TB2"]));set => this["TB2"] = value;}[global::System.Configuration.UserScopedSettingAttribute()][global::System.Diagnostics.DebuggerNonUserCodeAttribute()]public string TB3 {get => ((string)(this["TB3"]));set => this["TB3"] = value;}}
}

 Settings.settings：

<?xml version='1.0' encoding='utf-8'?>
<SettingsFile xmlns="http://schemas.microsoft.com/VisualStudio/2004/01/settings" CurrentProfile="(Default)" GeneratedClassNamespace="IfoxDemo.Properties" GeneratedClassName="Settings"><Profiles><Profile Name="(Default)" /></Profiles><Settings><Setting Name="TB1" Type="System.String" Scope="User"><Value Profile="(Default)" /></Setting><Setting Name="TB2" Type="System.String" Scope="User"><Value Profile="(Default)" /></Setting><Setting Name="TB3" Type="System.String" Scope="User"><Value Profile="(Default)" /></Setting></Settings>
</SettingsFile>

 在窗体文件中加入以下代码：

  public Form1(){InitializeComponent();// 窗体加载时触发（也可以写在 Form1_Load 事件中）this.Load += (sender, e) =>{// 从用户设置中读取上次保存的值（如果没有则为空）textBox1.Text = Properties.Settings.Default.TB1; // 对应 TB1textBox2.Text = Properties.Settings.Default.TB2; // 对应 TB2textBox3.Text = Properties.Settings.Default.TB3; // 对应 TB3// 窗体关闭时保存当前值this.FormClosing += (sender, e) =>{Properties.Settings.Default.TB1 = textBox1.Text;Properties.Settings.Default.TB2 = textBox2.Text;Properties.Settings.Default.TB3 = textBox3.Text;Properties.Settings.Default.Save(); // 必须调用 Save()};};}

窗体项目最好不要把doc ed db等做成静态函数，因为用户可能换个dwg文件继续执行窗体，这时候代码中的doc还是老dwg，容易造成bug、致命错误、闪退等。