C# WinForms DataGridView - 选择常量行！
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C# WinForms DataGridView - Constant Row Selected!
提问by Goober
I have a winforms datagridview that seems to always have at least one row selected all the time. I'm not interested in being able to select the rows at all really, I just need the user to be able to select the checkbox in column 1. Any ideas why there is always at least 1 row selected? How can i prevent this? Will it affect the ability to select the checkbox in column1?
我有一个 winforms datagridview，它似乎总是始终选择至少一行。我真的对能够选择行不感兴趣，我只需要用户能够选择第 1 列中的复选框。任何想法为什么总是至少选择 1 行？我怎样才能防止这种情况？它会影响在 column1 中选择复选框的能力吗？
Below are my Datagridview settings:
以下是我的 Datagridview 设置：
this.dataGridView1.AllowUserToAddRows = false;
this.dataGridView1.DefaultCellStyle.WrapMode = DataGridViewTriState.True;
this.dataGridView1.DefaultCellStyle.ForeColor = Color.Black;
this.dataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;
this.dataGridView1.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.AllCells;
this.dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
this.dataGridView1.MultiSelect = false;
this.dataGridView1.RowHeadersVisible = false;
this.dataGridView1.RowsDefaultCellStyle.BackColor = Color.WhiteSmoke;
this.dataGridView1.AlternatingRowsDefaultCellStyle.BackColor = Color.LightGray;
this.dataGridView1.ColumnCount = 0;
colSelect = new DataGridViewCheckBoxColumn();
colSelect.HeaderText = "Select Message";
colSelect.Width = 90;
this.dataGridView1.Columns.Insert(0, colSelect);
this.dataGridView1.Columns[0].DataPropertyName = "msgSelect";
采纳答案by James
You should use DataGridView.ClearSelection()to remove any selection(s) after you have populated your DataGridView.
在填充 DataGridView 后，您应该使用DataGridView.ClearSelection()删除任何选择。
Also you can make specific columns read only allow which would allow to restrict editing to your checkbox column only. See DataGridViewColumn.ReadOnly Property
您还可以将特定列设为只读，这将允许仅对复选框列进行编辑。请参阅DataGridViewColumn.ReadOnly 属性
回答by Calanus
Select the datagridview. Then, in the properties window scroll down until you find the property SelectionMode and change it to FullColumnSelect.
选择数据网格视图。然后，在属性窗口中向下滚动，直到找到属性 SelectionMode 并将其更改为 FullColumnSelect。
Alternatively if you want them to just select one checkbox at a time change it to CellSelect
或者，如果您希望他们一次只选择一个复选框，请将其更改为 CellSelect
回答by SO User
Goober, I encountered a similar problem, where I needed user to select rows using checkboxes. The first row is always selected by default after the gridview is populated irrespective of the gridview settings. To make sure the first row is not selected, everytime the gridview is populated, do a ClearSelection():
Goober，我遇到了类似的问题，我需要用户使用复选框来选择行。无论 gridview 设置如何，在填充 gridview 后，默认情况下始终选择第一行。为确保第一行未被选中，每次填充 gridview 时，执行 ClearSelection()：
this.dgridvw.DataSource = this.MyTable;
this.dgridvw.ClearSelection();
ClearSelection() clears all the selected rows.
ClearSelection() 清除所有选定的行。
回答by Dennis Collins
Make sure your are NOTcalling the method to load the data from the form constructor. If you call it from the form.load()
确保您没有调用从表单构造函数加载数据的方法。如果你从 form.load() 调用它
also after the datagridview is loaded do this
加载 datagridview 后也执行此操作
DataGridView.Rows[0].Selected = false;
DataGridView.Rows[0].Selected = false;
