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  • DataTable详细使用方法

    
    
     1         DataTable table = new DataTable(); //Create a new Table
    2 DataColumn colID = new DataColumn("ID",System.Type.GetType("System.Int32"));//ID
    3 DataColumn colName = new DataColumn("Name",System.Type.GetType("System.String"));//名称
    4 DataColumn colNum = new DataColumn("Num", System.Type.GetType("System.Int32"));//数量
    5 DataColumn colPrice = new DataColumn("Price", System.Type.GetType("System.Double"));//进货价格
    6 DataColumn colPlace = new DataColumn("Place", System.Type.GetType("System.String"));//供货商
    7 DataColumn colDescription = new DataColumn("Description", System.Type.GetType("System.String"));//备注
    8 table.PrimaryKey = new DataColumn[] { table.Columns["ID"] };
    9 //add all the define column
    10 table.Columns.AddRange(new DataColumn[] { colID, colName, colNum, colPlace, colPrice, colDescription });
    11
    12 //Add a line of data
    13 DataRow row = table.NewRow();
    14 row[colID] = 1;
    15 row[colName] = "ThinkPad-E420";
    16 row[colNum] = 10;
    17 row[colPrice] = 4000;
    18 row[colPlace]="南京苏创";
    19 row[colDescription]= "测试数据";
    20 table.Rows.Add(row);
    21
    22 //查询
    23 DataRow[] searchRows = table.Select();
    24 DataRow[] searchRows1 = table.Select("ID=1");
    25 //取值
    26 Console.WriteLine(searchRows[0][0].ToString());


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  • 原文地址:https://www.cnblogs.com/cnjava/p/2368914.html
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