我们在
Windows窗体中有一个非常奇怪的问题,我们似乎无法弄清楚.
我们的Windows窗体在第一列中有一个带有DataGridViewCheckBoxColumn的DataGridView.
![《c# – Windows窗体 – > DataGridView-> DataGridViewCheckBoxColumn取消选中所有留下的一件物品已检查》” /></a></p><p>我们添加了以下功能,允许用户切换 – >单击以选择此网格中的多个行：</p></p><pre><code>int colHit = gvLibrary.HitTest(e.X, e.Y).ColumnIndex;
int lastRowHit;
//mouse left click
if (e.Button == MouseButtons.Left)
{
if (colHit == 0)
{
if (Control.ModifierKeys == Keys.Shift)
{
lastRowHit = gvLibrary.HitTest(e.X, e.Y).RowIndex;
ShiftClickCheckBoxSetter(this.gvLibrary, int.Parse(txtFirstClickRow.Text), lastRowHit);
}
else
{
int firstRowHit = gvLibrary.HitTest(e.X, e.Y).RowIndex;
txtFirstClickRow.Text = firstRowHit.ToString();
}
}
}
</code></pre><p>这是CheckBoxSetter代码：</p></p><pre><code> private void ShiftClickCheckBoxSetter(DataGridView dataGridView, int p, int lastRowHit)
{
if (p < lastRowHit)
{
for (int i = p; i < lastRowHit; i++)
{
dataGridView.Rows[i].Cells[0].Value = true;
}
}
else//
{
for (int i = p; i >= lastRowHit; i--)
{
dataGridView.Rows[i].Cells[0].Value = true;
}
}
}
</code></pre><p>这是按预期工作的.</p><p><a href=](https://i.stack.imgur.com/f5bOs.gif)
void m_LibraryItemClicked(object sender, EventArgs e) {
foreach (DataGridViewRow dgvr in gvLibrary.Rows)
{
if (dgvr.Selected) {
dgvr.Selected = false;
}
dgvr.Cells["LSelect"].Value = true;
}
}
代表事件二：
private void m_LibraryItemClickedNone(object sender, EventArgs e)
{
foreach (DataGridViewRow dgvr in gvLibrary.Rows)
{
if (dgvr.Selected)
dgvr.Selected = false;
dgvr.Cells["LSelect"].Value = false;
}
}
这允许用户选择全部或选择无复选框.
private void m_LibraryItemClickedNone(object sender, EventArgs e)
{
dataGridView1.CurrentCell = null;
foreach (DataGridViewRow dgvr in gvLibrary.Rows)
{
if (dgvr.Selected)
dgvr.Selected = false;
dgvr.Cells["LSelect"].Value = false;
}
}
