[英]DataGridViewComboBoxColumn Event Fire too many times
I am having problems stopping the event firing a second time after selecting aa value in the drop down combo.在下拉组合中选择 aa 值后,我在第二次停止事件触发时遇到问题。 The event opens a dialog which tells the user if they want to save it with a yes or no option.
该事件打开一个对话框,告诉用户他们是否要使用是或否选项保存它。
I have a grid view has 2 columns on it:我有一个网格视图,上面有 2 列:
My code is below.我的代码如下。
namespace WindowsFormsApp3
{
public partial class Form1 : Form
{
List<Team> teamList = new List<Team>();
List<Team_Colour> teamColourList = new List<Team_Colour>();
DataGridViewComboBoxColumn cb = new DataGridViewComboBoxColumn();
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
teamList.Add(new Team { name = "Test A", Colour_ID = 1});
teamList.Add(new Team { name = "Test B", Colour_ID = 2 });
teamList.Add(new Team { name = "Test C", Colour_ID = 3 });
teamList.Add(new Team { name = "Test D", Colour_ID = 4 });
dataGridView1.DataSource = teamList;
dataGridView1.Columns[1].Visible = false;
cb.HeaderText = "Colour";
teamColourList.Add(new Team_Colour { Colour_ID = 1, Colour_Name = "None" });
teamColourList.Add(new Team_Colour { Colour_ID = 2, Colour_Name = "Green" });
teamColourList.Add(new Team_Colour { Colour_ID = 3, Colour_Name = "Blue" });
teamColourList.Add(new Team_Colour { Colour_ID = 4, Colour_Name = "Red" });
cb.DataSource = teamColourList;
cb.DisplayMember = "Colour_Name";
cb.ValueMember = "Colour_ID";
cb.DataPropertyName = "Colour_ID";
dataGridView1.Columns.Insert(1, cb);
}
private void DataGridView1_CurrentCellDirtyStateChanged(object sender, EventArgs e)
{
DialogResult dialogResult = MessageBox.Show("Are you sure", "Saving", MessageBoxButtons.YesNo);
if (dialogResult == DialogResult.Yes)
{
}
else if (dialogResult == DialogResult.No)
{
}
}
}
}
When I click a new value in the drop down for the first row, the event is fired as expected:当我在第一行的下拉列表中单击一个新值时,会按预期触发该事件:
When I click yes the dialog goes away but the dropdown still looks like it's selected as it appears different than the others:当我单击是时,对话框消失了,但下拉菜单仍然看起来像它被选中,因为它看起来与其他人不同:
As soon as I try to select an arrow of another dropdown, it is fired again like its not been unfocused.一旦我尝试选择另一个下拉列表的箭头,它就会再次被触发,就像它没有被聚焦一样。
How do I stop if being focused after I clicked yes during the first dialog box?如果在第一个对话框中单击“是”后集中注意力,如何停止?
I have found the solution.我找到了解决办法。 I am using both CellValueChanged and CurrentCellDirtyStateChanged to make it work.
我同时使用 CellValueChanged 和 CurrentCellDirtyStateChanged 使其工作。 My code is below.
我的代码如下。
namespace WindowsFormsApp3
{
public partial class Form1 : Form
{
List<Team> teamList = new List<Team>();
List<Team_Colour> teamColourList = new List<Team_Colour>();
DataGridViewComboBoxColumn cb = new DataGridViewComboBoxColumn();
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
teamList.Add(new Team { name = "Test A", Colour_ID = 1});
teamList.Add(new Team { name = "Test B", Colour_ID = 2 });
teamList.Add(new Team { name = "Test C", Colour_ID = 3 });
teamList.Add(new Team { name = "Test D", Colour_ID = 4 });
dataGridView1.DataSource = teamList;
dataGridView1.Columns[1].Visible = false;
cb.HeaderText = "Colour";
teamColourList.Add(new Team_Colour { Colour_ID = 1, Colour_Name = "None" });
teamColourList.Add(new Team_Colour { Colour_ID = 2, Colour_Name = "Green" });
teamColourList.Add(new Team_Colour { Colour_ID = 3, Colour_Name = "Blue" });
teamColourList.Add(new Team_Colour { Colour_ID = 4, Colour_Name = "Red" });
cb.DataSource = teamColourList;
cb.DisplayMember = "Colour_Name";
cb.ValueMember = "Colour_ID";
cb.DataPropertyName = "Colour_ID";
dataGridView1.Columns.Insert(1, cb);
}
private void DataGridView1_CurrentCellDirtyStateChanged(object sender, EventArgs e)
{
dataGridView1.CommitEdit(DataGridViewDataErrorContexts.Commit);
}
private void DataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
DialogResult dialogResult = MessageBox.Show("Are you sure", "Saving", MessageBoxButtons.YesNo);
if (dialogResult == DialogResult.Yes)
{
}
else if (dialogResult == DialogResult.No)
{
}
}
}
}
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