加载datagridview并添加组合框

Question

这里是我用来创建一个datagridview，然后添加2组合框的方法。三个DataTables从其他类加载。

public void GetWorkorderItems() 
     { 
     Workorders wo = new Workorders(); 
     ItemTable = wo.LoadWorkorderItemsTable(_ID); 


     this.datagridWorkorderItems.DataSource = ItemTable; 
     this.datagridWorkorderItems.AutoGenerateColumns = true; 
     this.datagridWorkorderItems.Columns[0].Visible = false; 
     this.datagridWorkorderItems.Columns[1].HeaderText = "Qty"; 
     this.datagridWorkorderItems.Columns[1].Width = 100; 
     this.datagridWorkorderItems.Columns[2].HeaderText = "Part"; 
     this.datagridWorkorderItems.Columns[2].Width = 100; 
     this.datagridWorkorderItems.Columns[3].HeaderText = "Labor"; 
     this.datagridWorkorderItems.Columns[3].Width = 100; 
     this.datagridWorkorderItems.Columns[4].HeaderText = "Price"; 
     this.datagridWorkorderItems.Columns[4].Width = 150; 
     this.datagridWorkorderItems.Columns[5].HeaderText = "Description"; 
     this.datagridWorkorderItems.Columns[5].Width = 150; 

     Parts part = new Parts(); 
     DataTable partdata = new DataTable(); 
     partdata = part.LoadPartTable(); 
     DataGridViewComboBoxColumn pcb = (DataGridViewComboBoxColumn)this.datagridWorkorderItems.Columns[2]; 
     pcb.DataSource = partdata; 
     pcb.DisplayMember = "PartName"; 
     pcb.ValueMember = "PartID"; 
     datagridWorkorderItems.Columns.Add(pcb); 

     Labor labor = new Labor(); 
     DataTable data = new DataTable(); 
     data = labor.LoadLaborTable(); 
     DataGridViewComboBoxColumn cb = (DataGridViewComboBoxColumn)this.datagridWorkorderItems.Columns[3]; 
     cb.DataSource = data; 
     cb.DisplayMember = "LaborItem"; 
     cb.ValueMember = "LaborID"; 
     datagridWorkorderItems.Columns.Add(cb); 

     } 

当代码到达创建DataGridViewComboBox的对象的代码退出的方法和不添加或加载组合框。也没有例外抛出。

任何帮助？

编辑* * ** DataGridViewTextBoxColumn COL0 =（DataGridViewTextBoxColumn）this.datagridWorkorderItems.Columns [0]; this.datagridWorkorderItems.Columns [0] .DataPropertyName =“WOItemID”; this.datagridWorkorderItems.Columns [0] .Visible = false; this.datagridWorkorderItems.Columns.Add（col0）;

 DataGridViewTextBoxColumn col1 = (DataGridViewTextBoxColumn)this.datagridWorkorderItems.Columns[1]; 
     this.datagridWorkorderItems.Columns[1].DataPropertyName = "Quantity"; 
     this.datagridWorkorderItems.Columns[1].HeaderText = "Qty"; 
     this.datagridWorkorderItems.Columns[1].Width = 100; 
     this.datagridWorkorderItems.Columns.Add(col1); 

     DataGridViewComboBoxColumn pcb = (DataGridViewComboBoxColumn)this.datagridWorkorderItems.Columns[2]; 
     pcb.DataSource = partdata; 
     pcb.DisplayMember = "PartName"; 
     pcb.ValueMember = "PartID"; 
     datagridWorkorderItems.Columns.Add(pcb); 

如果我理解，这可能是构建列的方式。

***固定码，工程* ** * **

public void GetWorkorderItems() 
     { 
     Workorders wo = new Workorders(); 
     ItemTable = wo.LoadWorkorderItemsTable(_ID); 

     Parts part = new Parts(); 
     DataTable partdata = new DataTable(); 
     partdata = part.LoadPartTable(); 

     Labor labor = new Labor(); 
     DataTable data = new DataTable(); 
     data = labor.LoadLaborTable(); 


     this.datagridWorkorderItems.AutoGenerateColumns = false; 

     DataGridViewTextBoxColumn col0 = new DataGridViewTextBoxColumn(); 
     col0.DataPropertyName = "WOItemID"; 
     col0.Visible = false; 
     this.datagridWorkorderItems.Columns.Add(col0); 

     DataGridViewTextBoxColumn col1 = new DataGridViewTextBoxColumn(); 
     col1.DataPropertyName = "Quantity"; 
     col1.HeaderText = "Qty"; 
     col1.Width = 100; 
     this.datagridWorkorderItems.Columns.Add(col1); 

     DataGridViewComboBoxColumn col2 = new DataGridViewComboBoxColumn(); 
     col2.DataPropertyName = "PartID"; 
     col2.DataSource = partdata; 
     col2.DisplayMember = "PartName"; 
     col2.ValueMember = "PartID"; 
     col2.HeaderText = "Part"; 
     datagridWorkorderItems.Columns.Add(col2); 

     DataGridViewComboBoxColumn col3 = new DataGridViewComboBoxColumn(); 
     col3.DataPropertyName = "LaborID"; 
     col3.DataSource = data; 
     col3.DisplayMember = "LaborItem"; 
     col3.ValueMember = "LaborID"; 
     col3.HeaderText = "Labor"; 
     datagridWorkorderItems.Columns.Add(col3); 

     DataGridViewTextBoxColumn col4 = new DataGridViewTextBoxColumn(); 
     col4.DataPropertyName = "Price"; 
     col4.HeaderText = "Price"; 
     col4.Width = 100; 
     this.datagridWorkorderItems.Columns.Add(col4); 

     DataGridViewTextBoxColumn col5 = new DataGridViewTextBoxColumn(); 
     col5.DataPropertyName = "Description"; 
     col5.HeaderText = "Description"; 
     col5.Width = 100; 
     this.datagridWorkorderItems.Columns.Add(col5); 

     this.datagridWorkorderItems.DataSource = ItemTable; 

     } 

Answer 1

尝试是这样的：

public ExampleForm() 
    { 
     InitializeComponent(); 
     datagridWorkorderItems.AutoGenerateColumns = false; 

     DataGridViewTextBoxColumn qtyColumn = new DataGridViewTextBoxColumn(); 
     qtyColumn.DataPropertyName = "Qty"; 
     qtyColumn.HeaderText = "Qty"; 
     datagridWorkorderItems.Columns.Add(qtyColumn); 

     DataGridViewComboBoxColumn partColumn = new DataGridViewComboBoxColumn(); 
     partColumn.Items.Add(new Part() { ID = 0, PartName = "Tire" }); 
     partColumn.Items.Add(new Part() { ID = 1, PartName = "Motor" }); 
     partColumn.HeaderText = "Part"; 
     partColumn.DataPropertyName = "PartID"; 
     partColumn.ValueMember = "ID"; 
     partColumn.DisplayMember = "PartName"; 
     datagridWorkorderItems.Columns.Add(partColumn); 

     List<WorkOrder> workOrders = new List<WorkOrder>(); 
     workOrders.Add(new WorkOrder() { Qty = 0, PartID = 0}); 
     workOrders.Add(new WorkOrder() { Qty = 2, PartID = 1}); 

     datagridWorkorderItems.DataSource = workOrders; 
    } 
} 

public class WorkOrder 
{ 
    public int Qty { get; set; } 
    public int PartID { get; set; } 
} 

public class Part 
{ 
    public int ID { get; set; } 
    public string PartName { get; set; } 
}