asp DataTable에 열 및 행을 추가하는 세 가지 방법

 
  
#region    : 
  
DataTable tblDatas = new DataTable("Datas"); 
  
 
  
DataColumn dc = null; 
  
dc = tblDatas.Columns.Add("ID", Type.GetType("System.Int32")); 
  
dc.AutoIncrement = true;//     
  
dc.AutoIncrementSeed = 1;//   1 
  
dc.AutoIncrementStep = 1;//   1 
  
dc.AllowDBNull = false; 
  
 
  
dc = tblDatas.Columns.Add("Product", Type.GetType("System.String")); 
  
dc = tblDatas.Columns.Add("Version", Type.GetType("System.String")); 
  
dc = tblDatas.Columns.Add("Description", Type.GetType("System.String")); 
  
 
  
DataRow newRow; 
  
newRow = tblDatas.NewRow(); 
  
newRow["Product"] = "    "; 
  
newRow["Version"] = "2.0"; 
  
newRow["Description"] = "    "; 
  
tblDatas.Rows.Add(newRow); 
  
 
  
newRow = tblDatas.NewRow(); 
  
newRow["Product"] = "    "; 
  
newRow["Version"] = "3.0"; 
  
newRow["Description"] = "      "; 
  
tblDatas.Rows.Add(newRow); 
  
#endregion 
  
 
 

 
  
#region    : 
  
DataTable tblDatas = new DataTable("Datas"); 
  
 
  
tblDatas.Columns.Add("ID", Type.GetType("System.Int32")); 
  
tblDatas.Columns[0].AutoIncrement = true; 
  
tblDatas.Columns[0].AutoIncrementSeed = 1; 
  
tblDatas.Columns[0].AutoIncrementStep = 1; 
  
 
  
tblDatas.Columns.Add("Product", Type.GetType("System.String")); 
  
tblDatas.Columns.Add("Version", Type.GetType("System.String")); 
  
tblDatas.Columns.Add("Description", Type.GetType("System.String")); 
  
 
  
tblDatas.Rows.Add(new object[] { null, "a", "b", "c" }); 
  
tblDatas.Rows.Add(new object[] { null, "a", "b", "c" }); 
  
tblDatas.Rows.Add(new object[] { null, "a", "b", "c" }); 
  
tblDatas.Rows.Add(new object[] { null, "a", "b", "c" }); 
  
tblDatas.Rows.Add(new object[] { null, "a", "b", "c" }); 
  
#endregion 
  
 
 

 
  
#region    ： 
  
DataTable table = new DataTable(); 
  
 
  
//  table     
  
DataColumn priceColumn = new DataColumn(); 
  
priceColumn.DataType = System.Type.GetType("System.Decimal");//        
  
priceColumn.ColumnName = "price";//      
  
priceColumn.DefaultValue = 50;//       
  
 
  
//   table     
  
DataColumn taxColumn = new DataColumn(); 
  
taxColumn.DataType = System.Type.GetType("System.Decimal"); 
  
taxColumn.ColumnName = "tax";//   
  
taxColumn.Expression = "price * 0.0862";//        ，               
  
 
  
//   table     
  
DataColumn totalColumn = new DataColumn(); 
  
totalColumn.DataType = System.Type.GetType("System.Decimal"); 
  
totalColumn.ColumnName = "total"; 
  
totalColumn.Expression = "price + tax";//      ，            
  
 
  
//         table  
  
table.Columns.Add(priceColumn); 
  
table.Columns.Add(taxColumn); 
  
table.Columns.Add(totalColumn); 
  
 
  
//     
  
DataRow row = table.NewRow(); 
  
table.Rows.Add(row);//      table  
  
 
  
// table      
  
DataView view = new DataView(table); 
  
 
  
//   DataGrid 
  
dg.DataSource = view; 
  
dg.DataBind(); 
  
#endregion