C# (CSharp) With_DB_Helper DB_Helper Examples

Example #1

File: DB_Helper.cs Project: Seungjik-Lee/C_Sharp_grammer

        public DB_Helper getInstance()
        {
            if (instance == null)
            {
                instance = new DB_Helper();
            }

            return(instance);
        }

Example #2

 private void DB_Delete()
 {
     DB_Helper.Query_Delete(textBox1.Text);
 }

Example #3

 private void DB_Update()
 {
     DB_Helper.Query_Update(textBox1.Text, textBox2.Text);
 }

Example #4

 private void DB_Insert()
 {
     DB_Helper.Query_Insert(textBox1.Text, textBox2.Text);
 }

Example #5

 private void DB_Select()
 {
     DB_Helper.Query_Select();
     dataGridView1.DataSource = DB_Helper.ds;
     dataGridView1.DataMember = "TB_CUST";
 }

Example #6

 public Form1()
 {
     InitializeComponent();
     dh = new DB_Helper().getInstance();
 }