畢設之工具類構建

時間 2019-11-21

標籤畢設工具構建简体版

原文原文鏈接

畢業設計結束了，在設計工程中的一些難點記錄下來，以供往後查閱。這次畢業設計winform應用程序。爲了在開發過程當中提升開發的效率，特此設立了幾個工具類。sql

1、數據庫中表字段自動生成實體類數據庫

在數據庫中進行表結構設計以後，爲今生成實體類，代碼以下。ide

  /// <summary>
    /// 用於從數據庫中生成實體類
    /// </summary>
   public class ProduceEntity
    {
       private string tableName;
       public ProduceEntity(string tableName)
       {
           this.tableName = tableName;
       }
       // string strconn = ConfigurationManager.ConnectionStrings["myConnection"].ConnectionString;
        string strconn = string.Format(@"Data Source=(local);Initial Catalog=GraduationProject;User ID=sa;Password=123");
        public  void StartProduceEntity()
        {
           // string tableName = "QCZZ";
            List<string> ZD = new List<string>();
            List<string> type = new List<string>();
            string sql=string.Format("SELECT a.name,b.name FROM syscolumns a left JOIN systypes b on a.xusertype=b.xusertype WHERE a.id=OBJECT_ID('{0}')",tableName);
            //using ()
            //{
            SqlConnection conn = new SqlConnection(strconn);
                SqlCommand cmd = new SqlCommand(sql,conn);
                try
                {
                    conn.Open();
                    SqlDataReader reader = cmd.ExecuteReader();
                    if (reader.HasRows)
                    {
                        while (reader.Read())
                        {
                            ZD.Add(reader[0].ToString());
                            type.Add(reader[1].ToString());
                        }
                    }
                    ProcessProduceEntity(ZD, type,tableName);
                }
                catch (Exception e2)
                {
                    
                }
                finally
                {
                    conn.Close();

                }
            }
       // }

        private void ProcessProduceEntity(List<string> ZD, List<string> type,string tableName)
        {
           
           //string path = string.Format(@"F:\資料\net\C#\Demo\畢業設計\Model\{0}.cs",tableName);
           string path = string.Format(@"F:\學習資料\畢業設計\Model\{0}.cs", tableName);
            FileStream fs = new FileStream(path,FileMode.Create);
            StreamWriter sw = new StreamWriter(fs);
            StringBuilder sb = new StringBuilder();
            sb.Append("using System;\r\n using System.Collections.Generic;\r\n using System.Text;\r\n");
            sb.Append("namespace Model\r\n{\r\n");
            sb.AppendFormat("public class {0}\r\n", tableName);
            sb.Append("{\r\n");
            
            string DataType=string.Empty;
            for(int i=0;i<ZD.Count;i++)
            {
                if(type[i].ToLower()=="varchar")
                {
                    DataType = "string";
                    //sb.AppendFormat("public string {0}\r\n", ZD[i].ToUpper());
                }
                else if (type[i].ToLower() == "datetime")
                {
                    DataType = "DateTime";
                    //sb.AppendFormat("public DateTime {0}\r\n", ZD[i].ToUpper());
                }
                else if (type[i].ToLower() == "int32")
                {
                    DataType = "int";
                }
                sb.AppendFormat("public {0} {1}\r\n", DataType,ZD[i]);
                sb.Append("{ \r\n");
                sb.Append("set;get;\r\n");
                sb.Append("}\r\n");
              
            }
            sb.Append("}\r\n");
            sb.Append("}\r\n");
            #region TRY
            try
            {
                sw.Write(sb.ToString());
            }
            catch (Exception E2)
            {

            }
            finally
            {
                sw.Close();
                fs.Close();
            }
            #endregion
        }

       
    }

View Code

這次代碼設計的比較倉促，還存在少量的bug。之後使用時要改正。工具

2、form表單的數據自動加載到實體類中學習

適用於的場景以下表單上一些textbox、RichTextBox等的值自動加載到實體類中，避免了一一的賦值，提升了開發效率。使用前的規則：表單控件的Name屬性必須與實體類中的字段的名稱保持一致。代碼以下所示：ui

  1   /// <summary>
  2     /// 表單數據生成實體類
  3     /// </summary>
  4     class FormDataToObject
  5     {
  6         private List<Control> list = new List<Control>();
  7         /// <summary>
  8         /// 卡片類,
  9         /// </summary>
 10         /// <param name="obj"></param>
 11         /// <param name="form"></param>
 12         /// <returns></returns>
 13         public object FormDataToEntity(object obj,Control form)
 14         {
 15             try
 16             {
 17                 this.GetControls(form);
 18                 Type Type = obj.GetType();
 19 
 20                 PropertyInfo[] infos = Type.GetProperties();
 21                 //for (int i = 0; i < form.Controls.Count; i++)
 22                 foreach (Control control in list)
 23                 {
 24                     foreach (PropertyInfo info in infos)
 25                     {
 26                         if (info.Name == control.Name)
 27                         {
 28                             if (typeof(TextBox) == control.GetType())
 29                             {
 30                                 info.SetValue(obj, ((TextBox)control).Text, null);
 31                             }
 32                             else if (typeof(RadioButton) == control.GetType())
 33                             {
 34                                 RadioButton rb = (RadioButton)control;
 35                                 if (rb.Checked)
 36                                 {
 37                                     info.SetValue(obj, true, null);
 38                                 }
 39                                 else
 40                                 {
 41                                     info.SetValue(obj, false, null);
 42                                 }
 43                             }
 44                             else if (typeof(DateTimePicker) == control.GetType())
 45                             {
 46                                 DateTimePicker dtp = (DateTimePicker)control;
 47                                 DateTime dt = dtp.Value;
 48                                 //int dd = dt.Day;
 49                                 info.SetValue(obj, dt, null);
 50                             }
 51                             else if (typeof(ComboBox) == control.GetType())
 52                             {
 53                                 ComboBox cbm = (ComboBox)control;
 54                                 info.SetValue(obj, cbm.Text, null);
 55                             }
 56                             else if (typeof(RichTextBox) == control.GetType())
 57                             {
 58                                 RichTextBox rtb = (RichTextBox)control;
 59                                 info.SetValue(obj, rtb.Text, null);
 60                             }
 61                             else if (typeof(NumericUpDown) == control.GetType())
 62                             {
 63                                 NumericUpDown num = (NumericUpDown)control;
 64                                 info.SetValue(obj, num.Value, null);
 65                             }
 66                             else if (typeof(CheckBox) == control.GetType())
 67                             {
 68                                 CheckBox cb = control as CheckBox;
 69                                 if (cb.Checked == true)
 70                                 {
 71                                     info.SetValue(obj, true, null);
 72                                 }
 73                             }
 74 
 75                         }
 76 
 77                     }
 78                 }
 79             }
 80             catch (Exception e)
 81             {
 82                 MessageBox.Show(e.Message);
 83             }
 84             return obj;
 85         }
 86         /// <summary>
 87         /// 列表類（不支持批量）
 88         /// </summary>
 89         /// <param name="obj">實體類</param>
 90         /// <param name="dataGridView">DataGridVIew的對象</param>
 91         /// <returns></returns>
 92         public object FormDataToEntityList(object obj, Control dataGridView)
 93         {
 94             //this.GetControls(form);
 95             Type Type = obj.GetType();
 96 
 97             PropertyInfo[] infos = Type.GetProperties();
 98            
 99                 if (dataGridView.GetType() == typeof(DataGridView))
100                 {
101                    DataGridView dgv= dataGridView as DataGridView;
102                     foreach(DataGridViewRow row in dgv.Rows )
103                     foreach(DataGridViewColumn  column in dgv.Columns)
104                     foreach (PropertyInfo info in infos)
105                     {
106                         if (info.PropertyType.Name.ToLower() == "int32")
107                         {
108                             if (info.Name == column.Name)
109                             {
110                                 int value = Convert.ToInt32(row.Cells[column.Name].Value);
111                                 info.SetValue(obj, value, null);
112 
113                             }
114                         }
115                         else
116                         {
117                             if (info.Name == column.Name)
118                             {
119                                 info.SetValue(obj, row.Cells[column.Name].Value, null);
120 
121                             }
122                         }
123 
124                     }
125                 }
126         
127             return obj;
128         }
129         
130         private void GetControls(Control Parent)
131         {
132             foreach (Control c in Parent.Controls)
133             {
134                 list.Add(c);
135                 if (c.Controls.Count > 0)
136                 {
137                     GetControls(c);
138                 }
139               
140             }
141             //return list;
142         }
143     }

View Code

設計思路：1.經過遞歸方法獲取表單上的所有控件。this

2.經過反射來獲取實體類中的字段信息（Type Type = obj.GetType();PropertyInfo[] infos = Type.GetProperties();）spa

3經過控制實體類中字段與表單控件Name屬性是否一致來進行賦值。設計

3、實體類中的數據自動展示在form表單控件上code

適用於的場景以下實體類中字段的數值自動加載到表單上一些textbox、RichTextBox等中，避免了一一的賦值，提升了開發效率。使用前的規則：表單控件的Name屬性必須與實體類中的字段的名稱保持一致。代碼以下所示：

 1  /// <summary>
 2     /// 轉換器，從實體類向表單數據
 3     /// </summary>
 4     class EntityToFormData
 5     {
 6         #region 用於將實體類中的數據裝換到表單卡片上
 7         private static List<Control> list = new List<Control>();
 8         public static void ConvertEntityToForm(object obj,Control form)
 9         {
10             Type type = obj.GetType();
11             PropertyInfo[] infos=type.GetProperties();
12             GetAllControl(form);
13             foreach (Control c in list)
14             {
15                 foreach (PropertyInfo info in infos)
16                 {
17                     if(c.GetType()==typeof(TextBox)
18                         || c.GetType() == typeof(RichTextBox))
19                     if (c.Name == info.Name)
20                     {
21                         c.Text = info.GetValue(obj, null).ToString();
22                     }
23                     if (c.GetType() == typeof(CheckBox))                        
24                         if (c.Name == info.Name)
25                         {
26                             bool flag = Convert.ToBoolean(info.GetValue(obj, null));
27                             (c as CheckBox).Checked = flag;   
28                         }
29                     if(c.GetType()==typeof(NumericUpDown))
30                     {
31                         if (c.Name == info.Name)
32                         {
33                             decimal b = Convert.ToDecimal(info.GetValue(obj, null));
34                             (c as NumericUpDown).Value = b;
35                         }
36                     }
37                 }
38             }
39         }
40         //用於獲取表單上的全部控件aa
41         private static void GetAllControl(Control control)
42         {
43             foreach(Control c in control.Controls)
44             {
45                 list.Add(c);
46                 if (c.Controls.Count > 0)
47                 {
48                     GetAllControl(c);
49                 }
50 
51               
52             }
53         }
54         #endregion
55 
56         #region 用於將實體類中的數據轉換到表單列表上
57         /// <summary>
58         /// 
59         /// </summary>
60         /// <param name="obj">實體類</param>
61         /// <param name="dgv">列表DataGridView實例</param>
62         public static void ConvertEntityToFormList(object obj, DataGridView dgv)
63         {
64             Type type = obj.GetType();
65             PropertyInfo[] infos = type.GetProperties();
66             int index = dgv.Rows.Add();
67                 foreach (DataGridViewColumn column in dgv.Columns)
68                     foreach (PropertyInfo info in infos)
69             {
70                 
71                 if (info.Name == column.Name)
72                 {
73                     dgv.Rows[index].Cells[column.Name].Value = info.GetValue(obj, null);
74                 }
75             }
76                 dgv.Rows[index].Tag = obj;    
77         }
78         #endregion
79     }