chore: initial commit

Interface_WebAPI/DatabaseClient/SqliteClient.cs

@@ -0,0 +1,83 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using System.Data.SQLite;
+
+
+
+namespace DatabaseClient
+{
+    class SqliteClient : DBClient
+    {
+        SQLiteConnection conn;
+
+        public SqliteClient() { }
+
+        public override void Connect(string connString)
+        {
+            try
+            {
+                conn = new SQLiteConnection(connString);
+            }
+            catch (Exception err)
+            {
+                GlobalVar.log.Error(err.Message);
+            }
+        }
+
+        public override int ExecNonQuery(string sql)
+        {
+            int res = 0;
+            try
+            {
+                if (conn!=null)
+                {
+                    conn.Open();
+
+                    var cmd = new SQLiteCommand(sql, conn);
+                    res = cmd.ExecuteNonQuery();
+
+                    conn.Close();
+                }
+            }
+            catch (Exception err)
+            {
+                GlobalVar.log.Error(err.Message);
+            }
+            return res;
+        }
+
+        public override DataTable ExecQuery(string sql)
+        {
+            DataTable dt = null;
+            try
+            {
+                if (conn!=null)
+                {
+                    conn.Open();
+
+                    var cmd = new SQLiteCommand(sql, conn);
+                    SQLiteDataAdapter da = new SQLiteDataAdapter(cmd);
+                    DataSet ds = new DataSet();
+                    da.Fill(ds);
+                    conn.Close();
+                    if (ds.Tables.Count > 0)
+                    {
+                        dt = ds.Tables[0];
+                    }
+                }
+            }
+            catch (Exception err)
+            {
+                GlobalVar.log.Error(err.Message);
+            }
+
+
+            return dt;
+        }
+    }
+}