From 9fc98e436343c4a899a7b6cb3f13153fc81fd683 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=81=E4=BC=9F=E5=B3=B0?= <1103490369@qq.com>
Date: Tue, 24 May 2022 15:07:35 +0000
Subject: [PATCH 1/3] =?UTF-8?q?=E6=96=B0=E5=BB=BA=2042=E4=B8=81=E4=BC=9F?=
 =?UTF-8?q?=E5=B3=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 "42\344\270\201\344\274\237\345\263\260/.keep" | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 "42\344\270\201\344\274\237\345\263\260/.keep"

diff --git "a/42\344\270\201\344\274\237\345\263\260/.keep" "b/42\344\270\201\344\274\237\345\263\260/.keep"
new file mode 100644
index 0000000..e69de29
-- 
Gitee


From 8986688bdd7b9dc2aa37bcabcc1f5c45051f6fa9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=81=E4=BC=9F=E5=B3=B0?= <1103490369@qq.com>
Date: Tue, 24 May 2022 15:08:20 +0000
Subject: [PATCH 2/3] =?UTF-8?q?=E6=96=B0=E5=BB=BA=20Wed=E4=BD=9C=E4=B8=9A?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Wed\344\275\234\344\270\232/.keep"                            | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 "42\344\270\201\344\274\237\345\263\260/Wed\344\275\234\344\270\232/.keep"

diff --git "a/42\344\270\201\344\274\237\345\263\260/Wed\344\275\234\344\270\232/.keep" "b/42\344\270\201\344\274\237\345\263\260/Wed\344\275\234\344\270\232/.keep"
new file mode 100644
index 0000000..e69de29
-- 
Gitee


From f241a9df8948f0910bd107058c4b9c7bd50923e4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=81=E4=BC=9F=E5=B3=B0?= <1103490369@qq.com>
Date: Tue, 24 May 2022 15:08:44 +0000
Subject: [PATCH 3/3] 11

---
 .../WebForm1.aspx.cs"                         | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 "42\344\270\201\344\274\237\345\263\260/Wed\344\275\234\344\270\232/WebForm1.aspx.cs"

diff --git "a/42\344\270\201\344\274\237\345\263\260/Wed\344\275\234\344\270\232/WebForm1.aspx.cs" "b/42\344\270\201\344\274\237\345\263\260/Wed\344\275\234\344\270\232/WebForm1.aspx.cs"
new file mode 100644
index 0000000..150e4f7
--- /dev/null
+++ "b/42\344\270\201\344\274\237\345\263\260/Wed\344\275\234\344\270\232/WebForm1.aspx.cs"
@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+using System.Web.UI;
+using System.Web.UI.WebControls;
+
+namespace WebApplication1
+{
+    public partial class WebForm1 : System.Web.UI.Page
+    {
+        protected void Page_Load(object sender, EventArgs e)
+        {
+            if (!Page.IsPostBack) {
+                SqlDataSource1.SelectCommand = "select * from city where type=1 ";
+                SqlDataSource2.SelectCommand = "select * from city where type=2 and pid=2";
+                SqlDataSource3.SelectCommand = "select * from city where type=3 and pid in (select id from city where type = 2 and pid = 2)";
+            }
+
+        }
+
+        protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
+        {
+            SqlDataSource2.SelectCommand = "select * from city where type=2 and pid=" + DropDownList1.SelectedValue;
+            SqlDataSource3.SelectCommand = "select * from city where type=3 and pid in (select id from city where type = 2 and pid = " + DropDownList1.SelectedValue+")";
+        }
+
+        protected void DropDownList2_SelectedIndexChanged(object sender, EventArgs e)
+        {
+            SqlDataSource3.SelectCommand = "select * from city where type=3 and pid =" + DropDownList2.SelectedValue;
+        }
+    }
+}
\ No newline at end of file
-- 
Gitee