優化SQL查詢+UI顯示修正

PrimaryFormParts/PrimaryForm.SQLSearch.cs

@@ -2,6 +2,8 @@ using MySqlConnector;
 using DBObj;
 using System.Globalization; 
 using System.IO;
+using System.Diagnostics;
+
 namespace DualScreenDemo{
     public partial class PrimaryForm
     {
@@ -9,11 +11,16 @@ namespace DualScreenDemo{
         {
             List<SongData> searchResults = new List<SongData>();
             Console.WriteLine(query);
-            string connectionString = "Server=192.168.22.170;Port=3306;Database=Karaoke-Kingpin;User=Karaoke-Kingpin;Password=ESM7yTPMnavFmbBH;";
+            string connectionString = "Server=192.168.11.4;Port=3306;Database=Karaoke-Kingpin;User=Karaoke-Kingpin;Password=ESM7yTPMnavFmbBH;";
 
             using (var connection = new MySqlConnection(connectionString))
             {
+                Stopwatch stopwatch = new Stopwatch();
+
                 connection.Open();
+                
+                stopwatch.Start();
+
                 Console.WriteLine("MyDB 連線成功！");
 
                 using (var command = new MySqlCommand(query, connection))
@@ -75,7 +82,9 @@ namespace DualScreenDemo{
                 }
 
                 connection.Close();
-                Console.WriteLine("MyDB 連線已關閉！");
+                stopwatch.Stop();
+                Console.WriteLine($"MyDB 連線已關閉！執行時間: {stopwatch.ElapsedMilliseconds} 毫秒");
+                Console.WriteLine($"查詢到 {searchResults.Count} 筆資料。");
             }
 
             return searchResults;
@@ -84,7 +93,7 @@ namespace DualScreenDemo{
         public List<Artist> SearchSingers_Mysql(string query){
             List<Artist> searchResults = new List<Artist>();
             Console.WriteLine(query);
-             string connectionString = "Server=192.168.22.170;Port=3306;Database=Karaoke-Kingpin;User=Karaoke-Kingpin;Password=ESM7yTPMnavFmbBH;";
+             string connectionString = "Server=192.168.11.4;Port=3306;Database=Karaoke-Kingpin;User=Karaoke-Kingpin;Password=ESM7yTPMnavFmbBH;";
 
             using (var connection = new MySqlConnection(connectionString))
             {

PrimaryFormParts/PrimaryForm.cs

@@ -342,7 +342,8 @@ namespace DualScreenDemo
             // 顯示包廂名稱
             // 取主機名稱的最後 20 個字元 (如果長度不足 20，則取全部)
             string displayName = "包廂" + hostName.Substring(Math.Max(0, hostName.Length - 20));
-            string pageNumber = (multiPagePanel.currentPageIndex + 1).ToString() + "/" + (multiPagePanel.totalPages).ToString();
+            string totalPages = multiPagePanel.totalPages.ToString() == "0" ? "1" : multiPagePanel.totalPages.ToString();
+            string pageNumber = (multiPagePanel.currentPageIndex + 1).ToString() + "/" + totalPages;
             // 設定字型：
             // "微軟正黑體"，大小 24，粗體 (Bold)
             Font font = new Font("微軟正黑體", 24, FontStyle.Bold);

PrimaryFormParts/SingerSearch/PrimaryForm.SingerSearch.BopomofoSearch.cs

@@ -521,7 +521,10 @@ namespace DualScreenDemo
         }
         private void FindZhuYiSingers(){
                 string searchText = inputBoxZhuYinSingers.Text;
-                string query = $"SELECT * FROM ArtistLibrary WHERE `歌手注音` LIKE '{searchText}%' ";
+                string query = string.IsNullOrWhiteSpace(searchText)
+                    ? "SELECT * FROM ArtistLibrary LIMIT 50;"
+                    : $"SELECT * FROM ArtistLibrary WHERE `歌手注音` LIKE '{searchText}%';";
+                //string query = $"SELECT * FROM ArtistLibrary WHERE `歌手注音` LIKE '{searchText}%' ";
                 var searchResults = SearchSingers_Mysql(query);  
 
                 currentPage = 0;

PrimaryFormParts/SingerSearch/PrimaryForm.SingerSearch.EnglishSearch.cs

@@ -271,7 +271,10 @@ namespace DualScreenDemo
         }
         private void FindEnglishSingers(){
                 string searchText = inputBoxEnglishSingers.Text;
-                string query = $"SELECT * FROM ArtistLibrary WHERE `歌手姓名` LIKE '{searchText}%' ";
+                string query = string.IsNullOrWhiteSpace(searchText)
+                    ? "SELECT * FROM ArtistLibrary LIMIT 50;"
+                    : $"SELECT * FROM ArtistLibrary WHERE `歌手姓名` LIKE '{searchText}%';";
+                //string query = $"SELECT * FROM ArtistLibrary WHERE `歌手姓名` LIKE '{searchText}%' ";
                 var searchResults = SearchSingers_Mysql(query);  
 
                 currentPage = 0;

PrimaryFormParts/SingerSearch/PrimaryForm.SingerSearch.HandwritingSearch.cs

@@ -289,7 +289,10 @@ namespace DualScreenDemo
         }
         private void FindHandwritingSingers(){
                 string searchText = handwritingInputBoxForSingers.Text;
-                string query = $"SELECT * FROM ArtistLibrary WHERE `歌手姓名` LIKE '{searchText}%' ";
+                string query = string.IsNullOrWhiteSpace(searchText)
+                    ? "SELECT * FROM ArtistLibrary LIMIT 50;"
+                    : $"SELECT * FROM ArtistLibrary WHERE `歌手姓名` LIKE '{searchText}%';";
+                //string query = $"SELECT * FROM ArtistLibrary WHERE `歌手姓名` LIKE '{searchText}%' ";
                 var searchResults = SearchSingers_Mysql(query);  
 
                 currentPage = 0;

PrimaryFormParts/SingerSearch/PrimaryForm.SingerSearch.PinyinSearch.cs

@@ -175,7 +175,10 @@ namespace DualScreenDemo
             string searchText = inputBoxPinYinSingers.Text;
             // 在這裡添加搜尋歌曲的邏輯
             // 例如：根據輸入框的內容搜尋歌曲
-            string query = $"SELECT * FROM SongLibrary WHERE `歌星A拼音` LIKE '{searchText}%' OR `歌星B拼音` LIKE '{searchText}%' ";
+            string query = string.IsNullOrWhiteSpace(searchText)
+                ? "SELECT * FROM SongLibrary ORDER BY `點播次數` DESC LIMIT 200;"
+                : $"SELECT * FROM SongLibrary WHERE `歌星A拼音` LIKE '{searchText}%' OR `歌星B拼音` LIKE '{searchText}%' ";
+            //string query = $"SELECT * FROM SongLibrary WHERE `歌星A拼音` LIKE '{searchText}%' OR `歌星B拼音` LIKE '{searchText}%' ";
 
             var searchResults = SearchSongs_Mysql(query);              
             // 重置分頁    

PrimaryFormParts/SongSearch/PrimaryForm.SongSearch.BopomofoSearch.cs

@@ -309,7 +309,9 @@ namespace DualScreenDemo
             string searchText = inputBoxZhuYinSongs.Text;
             // 在這裡添加搜尋歌曲的邏輯
             // 例如：根據輸入框的內容搜尋歌曲
-            string query = $"SELECT * FROM SongLibrary WHERE `歌曲注音` LIKE '{searchText}%' ";
+            string query = string.IsNullOrWhiteSpace(searchText)
+                            ? "SELECT * FROM SongLibrary ORDER BY `點播次數` DESC LIMIT 200;"
+                            : $"SELECT * FROM SongLibrary WHERE `歌曲注音` LIKE '{searchText}%' ORDER BY `點播次數` DESC;";
 
             var searchResults = SearchSongs_Mysql(query);              
             // 重置分頁    

PrimaryFormParts/SongSearch/PrimaryForm.SongSearch.EnglishSearch.cs

@@ -228,9 +228,10 @@ namespace DualScreenDemo
         }
         private void FindEnglishSongs(){
             string searchText = inputBoxEnglishSongs.Text;
-            // 在這裡添加搜尋歌曲的邏輯
+            // 檢查是否為空字串或空白字元
-            // 例如：根據輸入框的內容搜尋歌曲
+            string query = string.IsNullOrWhiteSpace(searchText)
-            string query = $"SELECT * FROM SongLibrary WHERE `歌曲名稱` LIKE '{searchText}%' ";
+                ? "SELECT * FROM SongLibrary ORDER BY `點播次數` DESC LIMIT 200;"
+                : $"SELECT * FROM SongLibrary WHERE `歌曲名稱` LIKE '{searchText}%' ORDER BY `點播次數` DESC;";
 
             var searchResults = SearchSongs_Mysql(query);              
             // 重置分頁    

PrimaryFormParts/SongSearch/PrimaryForm.SongSearch.HandwritingSearch.cs

@@ -286,7 +286,10 @@ namespace DualScreenDemo
             string searchText = handwritingInputBoxForSongs.Text;
             // 在這裡添加搜尋歌曲的邏輯
             // 例如：根據輸入框的內容搜尋歌曲
-            string query = $"SELECT * FROM SongLibrary WHERE `歌曲名稱` LIKE '{searchText}%' ";
+            string query = string.IsNullOrWhiteSpace(searchText)
+                ? "SELECT * FROM SongLibrary ORDER BY `點播次數` DESC LIMIT 200;"
+                : $"SELECT * FROM SongLibrary WHERE `歌曲名稱` LIKE '{searchText}%' ORDER BY `點播次數` DESC;";
+
 
             var searchResults = SearchSongs_Mysql(query);              
             // 重置分頁    

PrimaryFormParts/SongSearch/PrimaryForm.SongSearch.NumberSearch.cs

@@ -545,6 +545,11 @@ namespace DualScreenDemo
             string searchText = inputBoxSongIDSearch.Text;
             // 在這裡添加搜尋歌曲的邏輯
             // 例如：根據輸入框的內容搜尋歌曲
+            if (string.IsNullOrEmpty(searchText))
+            {
+                // 如果輸入框為空，則不進行搜尋
+                return;
+            }
             string query = $"SELECT * FROM SongLibrary WHERE `歌曲編號` = '{searchText}' ";
 
             var searchResults = SearchSongs_Mysql(query);              

PrimaryFormParts/SongSearch/PrimaryForm.SongSearch.PinyinSearch.cs

@@ -265,8 +265,9 @@ namespace DualScreenDemo
             string searchText = inputBoxPinYinSongs.Text;
             // 在這裡添加搜尋歌曲的邏輯
             // 例如：根據輸入框的內容搜尋歌曲
-            string query = $"SELECT * FROM SongLibrary WHERE `歌曲拼音` LIKE '{searchText}%' ";
+            string query = string.IsNullOrWhiteSpace(searchText)
-
+                ? "SELECT * FROM SongLibrary ORDER BY `點播次數` DESC LIMIT 200;"
+                : $"SELECT * FROM SongLibrary WHERE `歌曲拼音` LIKE '{searchText}%' ORDER BY `點播次數` DESC;";
             var searchResults = SearchSongs_Mysql(query);              
             // 重置分頁    
             currentPage = 0;