vb.net 帮助以窗口形式向 DataGridView 添加复选框列
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Help with adding checkbox column to DataGridView in window form
提问by Peter Mankge
I am trying to add a checkbox column to a DataGridView in a simple window forms application.
我正在尝试在一个简单的窗口窗体应用程序中向 DataGridView 添加一个复选框列。
I am pulling back some data from a database using ADO.NET, putting into a datatable, and then setting the datagridview datasource to the datatable. I then want to add a checkbox column as the second column. So far I have this code that seems to work:
我正在使用 ADO.NET 从数据库中提取一些数据，放入数据表中，然后将 datagridview 数据源设置为数据表。然后我想添加一个复选框列作为第二列。到目前为止，我有这个似乎有效的代码：
' Code here to connect to database
Dim da As New SqlDataAdapter(cmd)
Dim dt As New DataTable
da.Fill(dt)
MainForm.MyDataGridView.DataSource = dt
Dim ChkBox As New DataGridViewCheckBoxColumn
ChkBox.FlatStyle = FlatStyle.Standard
MainForm.MyDataGridView.Columns.Insert(1, ChkBox)
This code 'works' and I get MyDataGridView to show the data with the checkbox column in the correct position in the table.
这段代码“有效”，我让 MyDataGridView 在表格中的正确位置显示带有复选框列的数据。
However, for some reason, I cannot check any of the check boxes in the DataGridView? I have tried lots of things (e.g.altering the readonly state of the column) but cannot get it to work.
但是，由于某种原因，我无法选中 DataGridView 中的任何复选框？我已经尝试了很多东西（提高了列的只读状态）但无法让它工作。
Is there something obvious that I am missing?
有什么明显的我遗漏了吗？
回答by Wahid Bitar
Add new column in the properties of the DataGridView by:
通过以下方式在 DataGridView 的属性中添加新列：
- Choosing Columns from properties panel and double click on it
- then choose " Add..." button
- then set the new column as " Unbound Column"
- Give it a name and choose its type " DataGridViewCheckBoxColumn"
- Set the header you want and make surethat " read only" is notselected.
- 从属性面板中选择列并双击它
- 然后选择“添加...”按钮
- 然后将新列设置为“未绑定列”
- 给它一个名字并选择它的类型“ DataGridViewCheckBoxColumn”
- 设置所需的标题并确保未选择“只读” 。
that's it.
就是这样。
(If the database field (in SQL Server) is of type 'bit' then the the datagridview automatically maps it to the datagridview as a checkbox instead of a textbox. No coding necessary.)
（如果数据库字段（在 SQL Server 中）是“位”类型，那么 datagridview 会自动将它映射到 datagridview 作为复选框而不是文本框。无需编码。）
回答by Peter Mankge
Private Sub ADD_Column()
Dim AddColumn As New DataGridViewCheckBoxColumn
With AddColumn
.HeaderText = "ColumnName"
.Name = "Column Name that will be displayed"
.Width = 80
End With
dgAdmin.Columns.Insert(1, AddColumn)
End Sub
回答by Peter Mankge
private void dataGridView1_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
{
if(dataGridView1.Columns.Count == 13 )
{
DataGridViewCheckBoxColumn chkSelect = new DataGridViewCheckBoxColumn();
{
chkSelect.HeaderText = "Select All";
chkSelect.Name = "chkSelect";
chkSelect.Selected = false;
}
dataGridView1.Columns.Insert(13, chkSelect);
}
}
回答by Kashan Malick
Dim checkBoxColumn As New DataGridViewCheckBoxColumn()
checkBoxColumn.HeaderText = ""
checkBoxColumn.Width = 30
checkBoxColumn.Name = "checkBoxColumn"
dataGridView1.Columns.Insert(0, checkBoxColumn)
回答by Hilal Al-Rajhi
I have had this issue once, but I solved it. L load data from dataset and the fill the datagridview. I was setting the readOnly property of the datagridview = True, which means you cant modify the data in the datagridview. Just set the AllowUserToAddColumnto False and make readOnly = Falseand this will work.
我曾经遇到过这个问题，但我解决了。l 从dataset加载数据并填充datagridview。我正在设置 的 readOnly 属性datagridview = True，这意味着您不能修改datagridview. 只需将 设置AllowUserToAddColumn为 False 并制作readOnly = False，这将起作用。
回答by Harpal
Try this:
尝试这个：
DataGridViewCheckBoxColumn chkBoxCol = new DataGridViewCheckBoxColumn();
DataGridView1.Columns.Add(chkBoxCol);
