vb.net 以编程方式将 ButtonColumn 从 DataTable 添加到 GridView
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Programmatically Add ButtonColumn to GridView From DataTable
提问by Selrac
I have a problem adding a column with buttons in GridView.
我在 GridView 中添加带有按钮的列时遇到问题。
As you see from the code below, the data source from teh GridView is a DataTable. I need to add an additional column to the table with a button.
从下面的代码中可以看出，GridView 的数据源是一个 DataTable。我需要使用按钮向表格中添加一列。
From the code below, I get an error message saying:
从下面的代码中，我收到一条错误消息：
Value of type 'System.Windows.Forms.DataGridViewButtonColumn' cannot be converted to 'System.Web.UI.WebControls.DataControlField'.
“System.Windows.Forms.DataGridViewButtonColumn”类型的值无法转换为“System.Web.UI.WebControls.DataControlField”。
Dim dt_AllGroupsSetUp2 As New DataTable()
dt_AllGroupsSetUp2.Columns.Add("Name", Type.GetType("System.String"))
dt_AllGroupsSetUp2.Columns.Add("Age", Type.GetType("System.String"))
dt_AllGroupsSetUp2.Columns.Add("Hight", Type.GetType("System.String"))
For i As Integer = 0 To 7
dt_AllGroupsSetUp2.Rows.Add()
dt_AllGroupsSetUp2.Rows(i)(0) = "John"
dt_AllGroupsSetUp2.Rows(i)(1) = 10
dt_AllGroupsSetUp2.Rows(i)(2) = 70
Next
GV_DataByGroupAct.DataSource = dt_AllGroupsSetUp2
Dim buttonColumn As New DataGridViewButtonColumn
buttonColumn.Name = "Button"
GV_DataByGroupAct.Columns.Add(buttonColumn)
GV_DataByGroupAct.DataBind()
I tried the folling also but returned the following error: 'New' cannot be used on a class that is declared 'MustInherit'.
我也尝试了以下操作，但返回了以下错误：“New”不能用于声明为“MustInherit”的类。
GV_DataByGroupAct.DataSource = dt_AllGroupsSetUp2
Dim buttonColumn As New DataControlField
GV_DataByGroupAct.Columns.Add(buttonColumn)
GV_DataByGroupAct.DataBind()
Any ideas?
有任何想法吗？
Thanks
谢谢
回答by Jenda Matejicek
In the code behind use this before binding data to GridView (but it's c#):
在将数据绑定到 GridView 之前，在后面的代码中使用它（但它是 c#）：
GV_DataByGroupAct.Columns.Add(new ButtonField() { Text = "Button" });
Or you could prepare the GridView with the button field
或者您可以使用按钮字段准备 GridView
<asp:GridView ID="GV_DataByGroupAct" runat="server" AutoGenerateColumns="False">
<Columns>
<asp:BoundField DataField="Name" HeaderText="Name" />
<asp:BoundField DataField="Age" HeaderText="Age" />
<asp:BoundField DataField="Hight" HeaderText="Hight" />
<asp:ButtonField Text="Button" />
</Columns>
</asp:GridView>
after bind you will have this result:
绑定后你会得到这个结果：
回答by Selrac
I was really complicating things. Thanks Jenda, it is easier to prepare the grid view. The following workds if it helps someone:
我真的把事情复杂化了。感谢 Jenda，准备网格视图更容易。如果对某人有帮助，以下内容有效：
<asp:GridView ID="GV_DataByGroupAct" runat="server" AutoGenerateColumns="False">
<Columns>
<asp:BoundField DataField="Name" HeaderText="Name" />
<asp:BoundField DataField="Age" HeaderText="Age" />
<asp:BoundField DataField="Hight" HeaderText="Hight" />
<asp:ButtonField Text="Button" />
</Columns>
</asp:GridView>
Code:
代码：
Dim dt_AllGroupsSetUp2 As New DataTable()
dt_AllGroupsSetUp2.Columns.Add("Name", Type.GetType("System.String"))
dt_AllGroupsSetUp2.Columns.Add("Age", Type.GetType("System.String"))
dt_AllGroupsSetUp2.Columns.Add("Hight", Type.GetType("System.String"))
For i As Integer = 0 To 7
dt_AllGroupsSetUp2.Rows.Add()
dt_AllGroupsSetUp2.Rows(i)(0) = "John"
dt_AllGroupsSetUp2.Rows(i)(1) = 10
dt_AllGroupsSetUp2.Rows(i)(2) = 70
Next
GV_DataByGroupAct.DataSource = dt_AllGroupsSetUp2
GV_DataByGroupAct.DataBind()
回答by tezzo
DataGridViewButtonColumn is intended to be used in DataGridView control.
DataGridViewButtonColumn 旨在用于 DataGridView 控件。
With GridView you can use ButtonField.
使用 GridView，您可以使用ButtonField。
