我一直插入數據到同一行

Question

請幫忙弄清楚我做錯了什麼，我的datagridview是數據綁定，所以我不能添加一個新的行，所以我創建了一個數據表以便能夠這樣做，有一個問題我無法擺脫，因爲我嘗試添加添加到同一行的數據。而不是新行，請幫助弄清楚爲什麼會發生這種情況或更好的方法來解決它。

public void getAllData(string stockCode, string description, string unit, string quantity, string costPrice, 
      string saleprice, string taxcode) 
{ 
    DataTable table = new DataTable(); 

    DataRow dr = table.NewRow(); 
    table.Columns.Add(new DataColumn("stk_code")); 
    table.Columns.Add(new DataColumn("stk_description")); 
    table.Columns.Add(new DataColumn("quantity")); 
    table.Columns.Add(new DataColumn("uom")); 
    table.Columns.Add(new DataColumn("discount")); 
    table.Columns.Add(new DataColumn("tax_code")); 
    table.Columns.Add(new DataColumn("stk_sale_price_one")); 

    dr[0] = stockCode; 
    dr[1] = description; 
    dr[2] = quantity; 
    dr[3] = 0; 
    dr[4] = unit; 
    dr[5] = taxcode; 
    dr[6] = saleprice; 

    invoiceItemDataView.DataSource = table; 

    table.Rows.Add(dr); 
    table.AcceptChanges(); 
} 

Answer 1

static DataTable MyTable = null; //store the table data; 

//may be you means "AddData"? 
public void AddData(string stockCode, string description, string unit, string quantity, string costPrice, 
      string saleprice, string taxcode) 
{ 
    DataTable table = MyTable 
    if(table == null) 
    { 
     DataTable table = new DataTable();  
     table.Columns.Add(new DataColumn("stk_code")); 
     table.Columns.Add(new DataColumn("stk_description")); 
     table.Columns.Add(new DataColumn("quantity")); 
     table.Columns.Add(new DataColumn("uom")); 
     table.Columns.Add(new DataColumn("discount")); 
     table.Columns.Add(new DataColumn("tax_code")); 
     table.Columns.Add(new DataColumn("stk_sale_price_one")); 
     MyTable = table; 
    } 

    DataRow dr = table.NewRow(); 
    dr[0] = stockCode; 
    dr[1] = description; 
    dr[2] = quantity; 
    dr[3] = 0; 
    dr[4] = unit; 
    dr[5] = taxcode; 
    dr[6] = saleprice; 
    table.Rows.Add(dr); 
    table.AcceptChanges(); 

    invoiceItemDataView.DataSource = table; 
} 

Answer 2

你爲什麼要創建表列的每個設置行時間？你不需要那個。在程序開始時執行一次。像這樣。

創建表：

private DataTable CreateDataTable() 
    { 

     DataTable table = new DataTable(); 

     table.Columns.Add(new DataColumn("stk_code")); 
     table.Columns.Add(new DataColumn("stk_description")); 
     table.Columns.Add(new DataColumn("quantity")); 
     table.Columns.Add(new DataColumn("uom")); 
     table.Columns.Add(new DataColumn("discount")); 
     table.Columns.Add(new DataColumn("tax_code")); 
     table.Columns.Add(new DataColumn("stk_sale_price_one")); 

     return table; 
    } 

它初始化到數據表，你將設置爲您的DataGridView：

private DataTable dt; 

    public MyClass() 
    { 
     InitializeComponent(); 
     dt = CreateDataTable(); 
    } 

現在，把你的數據表給你的方法。

getAllData(dt, "1", "2", "2", "2", 
        "2", "s", "s"); 
      dataGridView1.DataSource = dt; 

最後，插入新行到您的數據表：

public void getAllData(DataTable table, string stockCode, string description, string unit, string quantity, string costPrice, 
     string saleprice, string taxcode) 
    { 
     int index = table.Rows.Count > 0 ? table.Rows.Count : 0; 
     DataRow dr = table.NewRow(); 
     dr[0] = stockCode; 
     dr[1] = description; 
     dr[2] = quantity; 
     dr[3] = 0; 
     dr[4] = unit; 
     dr[5] = taxcode; 
     dr[6] = saleprice; 

     table.Rows.InsertAt(dr, index); 
     table.AcceptChanges(); 
    } 

希望這有助於你。

Answer 3

 public void getData(string stockCode, string description, string unit, string quantity, string costPrice, 
      string saleprice, string taxcode) 
{ 
    DataTable table = new DataTable(); 

    DataRow dr = table.NewRow(); 
    table.Columns.Add(new DataColumn("stk_code")); 
    table.Columns.Add(new DataColumn("stk_description")); 
    table.Columns.Add(new DataColumn("quantity")); 
    table.Columns.Add(new DataColumn("uom")); 
    table.Columns.Add(new DataColumn("discount")); 
    table.Columns.Add(new DataColumn("tax_code")); 
    table.Columns.Add(new DataColumn("stk_sale_price_one")); 

    dr[0] = stockCode; 
    dr[1] = description; 
    dr[2] = quantity; 
    dr[3] = 0; 
    dr[4] = unit; 
    dr[5] = taxcode; 
    dr[6] = saleprice; 



    table.Rows.Add(dr); 
    invoiceItemDataView.DataSource = table; 
}