diff --git "a/\351\231\210\346\272\220/20260601\347\254\224\350\256\260.md" "b/\351\231\210\346\272\220/20260601\347\254\224\350\256\260.md"
new file mode 100644
index 0000000000000000000000000000000000000000..a8d8e02426ac8d0408ef0ac3435e404586542711
--- /dev/null
+++ "b/\351\231\210\346\272\220/20260601\347\254\224\350\256\260.md"
@@ -0,0 +1,9 @@
+# 笔记
+
+## 安装SDK
+
+### Windows 系统
+
+- 右键“此电脑”或“我的电脑”，选择“属性” > “高级系统设置” > “环境变量”。
+
+- 添加以下变量： ANDROID_HOME：设置为 Android SDK 的安装路径，例如 C:\Users\YourName\AppData\Local\Android\Sdk。 Path：在 Path 中添加以下路径： %ANDROID_HOME%\platform-tools %ANDROID_HOME%\tools
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diff --git "a/\351\231\210\346\272\220/20260603\347\254\224\350\256\260.md" "b/\351\231\210\346\272\220/20260603\347\254\224\350\256\260.md"
new file mode 100644
index 0000000000000000000000000000000000000000..23c88de0287cacae9f75652cfe1d838bb5cea0ed
--- /dev/null
+++ "b/\351\231\210\346\272\220/20260603\347\254\224\350\256\260.md"
@@ -0,0 +1,12 @@
+# 笔记
+
+## NuGet包雨全局工具
+
+```
+dotnet add package Microsoft.EntityFrameworkCore.Sqlite
+dotnet add package Microsoft.EntityFrameworkCore.Design
+```
+
+```
+dotnet tool install --global dotnet-ef
+```
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diff --git "a/\351\231\210\346\272\220/20260604\347\254\224\350\256\260.md" "b/\351\231\210\346\272\220/20260604\347\254\224\350\256\260.md"
new file mode 100644
index 0000000000000000000000000000000000000000..e2b233157b7a41af90e2769f0e0710d2b13a615f
--- /dev/null
+++ "b/\351\231\210\346\272\220/20260604\347\254\224\350\256\260.md"
@@ -0,0 +1,15 @@
+# 笔记
+
+##  SQLite 文件
+
+### 编写AppDbContext
+
+```
+public class AppDbContext : DbContext
+{
+    public AppDbContext(DbContextOptions<AppDbContext> options) : base(options) { }
+
+    public DbSet<Category> Categories => Set<Category>();
+    public DbSet<Product> Products => Set<Product>();
+}
+```
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diff --git "a/\351\231\210\346\272\220/20260605\347\254\224\350\256\260.md" "b/\351\231\210\346\272\220/20260605\347\254\224\350\256\260.md"
new file mode 100644
index 0000000000000000000000000000000000000000..50c671784f4ccf58da066e2fd2425f392b855ba5
--- /dev/null
+++ "b/\351\231\210\346\272\220/20260605\347\254\224\350\256\260.md"
@@ -0,0 +1,25 @@
+# 笔记
+
+## crud风格项目
+
+```
+//新增客户
+private void btnAdd_Click(object sender, EventArgs e)
+{
+  _Mode = "Add";
+  
+  //创建客户实体对象
+   _Current = new Entity_Customer();
+  _Current.CreatedBy = "admin";
+  _Current.CreationDate = DateTime.Now;
+  
+  //绑定主表文本框数据源
+   DoBindingEditorPanel(panel3, _Current);
+  
+  //设置按钮状态
+   SetButtonState();
+  
+  tabControl1.SelectedTab = tabPage2;
+  txtCustomerCode.ReadOnly = false;
+}
+```
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diff --git "a/\351\231\210\346\272\220/20260608\347\254\224\350\256\260.md" "b/\351\231\210\346\272\220/20260608\347\254\224\350\256\260.md"
new file mode 100644
index 0000000000000000000000000000000000000000..eee0b0409a61551089efc18c8ab9a5e136192c0c
--- /dev/null
+++ "b/\351\231\210\346\272\220/20260608\347\254\224\350\256\260.md"
@@ -0,0 +1,27 @@
+# 笔记
+
+## 分页查询
+
+```
+    public IEnumerable<Student> Get([FromQuery] int pageIndex = 1, [FromQuery] int pageSize = 5)
+    {
+
+        if (pageIndex < 1)
+        {
+            pageIndex = 1;
+        }
+        // 页大小不能小于5
+        if (pageSize < 5)
+        {
+            pageSize = 5;
+        }
+        // 页大小不能大于100
+        if (pageSize > 100)
+        {
+            pageSize = 100;
+        }
+
+        var list = _db.Students.OrderBy(t => t.Id).Skip((pageIndex - 1) * pageSize).Take(pageSize);
+        return list;
+    }
+```
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