DataGridView 编辑 出现 ListView
一：得到列的索引
int ColumnIndex = this.DgvDiagnosisList.CurrentCell.ColumnIndex;//获取列的索引
二：得到当前选中行并得到该行的某一列的值
int RowIndex = this.DgvDiagnosisList.CurrentRow.Index;//获取行的索引
int RowIndex a= e.RowIndex;//这句话也可以获得行的索引,但上面那句使用更广泛。
diagnoseIDs = Convert.ToInt32(this.DgvDiagnosisList.Rows[RowIndex].Cells["diagnoseID"].Value.ToString());
实现功能：单击某一行某一列然后编辑那一列的值根据值模糊查询弹出listview使数据显示在listview中，并且可以把listview中选中的值附加到datagridview中的选中行.
需要控件
Datagridview
TextBox
ListView
事件
Datagridview CurrentCellChanged事件
TextBox KeyDowm（首次按下某个键）事件，TextChanged事件
ListView KeyPress事件,MouseDoubleClick(鼠标双击)事件
代码
DagaGridView
private void DgvDiagnosisList_CurrentCellChanged(object sender, EventArgs e)
{
DataGridViewCell cell = this.DgvDiagnosisList.CurrentCell;
if ((cell != null) && (cell.ColumnIndex == 1) && (cell.RowIndex != -1))
{
this.TextChangedBox.Size = cell.Size;
Rectangle rect = this.DgvDiagnosisList.GetCellDisplayRectangle(cell.ColumnIndex, cell.RowIndex, false);
this.TextChangedBox.Top = rect.Top + this.DgvDiagnosisList.Top;
this.TextChangedBox.Left = rect.Left + this.DgvDiagnosisList.Left;
if (this.DgvDiagnosisList.Top.ToString() == this.TextChangedBox.Top.ToString())
{
this.TextChangedBox.Visible = false;
}
else
{
this.TextChangedBox.Visible = true;
}
textChangeLock = true;
if (cell.Value != null)
this.TextChangedBox.Text = cell.Value.ToString();
else
this.TextChangedBox.Text = "";
this.TextChangedBox.Focus();
textChangeLock = false;
}
else
{
this.TextChangedBox.Visible = false;
this.listView2.Visible = false;
}
}
TextBox
private void TextChangedBox_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyValue == 40) // 当在TextChangedBox输入下方向键时
{
this.listView2.Focus(); //listView2得到焦点
this.TextChangedBox.Visible = false;
}
}
private void TextChangedBox_TextChanged(object sender, EventArgs e)
{
if (textChangeLock)
return;
if (IsType == 0 || IsType == 1)
{
DataTable dt = new DataTable();
string ChangedBox = this.TextChangedBox.Text;
if (IsType == 1)
{
dt = fun.Se_DuoBiao15(departmentID, ChangedBox);
}
else if (IsType == 0)
{
dt = fun.Se_DuoBiao16(UserID, ChangedBox);
}
this.listView2.Visible = true;
this.listView2.Left = this.TextChangedBox.Left;
this.listView2.Top = this.TextChangedBox.Top + 20;
this.listView2.Width = 700;
this.listView2.Items.Clear();
foreach (DataRow dr in dt.Rows)
{
ListViewItem ite = new ListViewItem();
ite.SubItems[0].Text = dr["diagnoseID"].ToString();
ite.SubItems.Add(dr["icdCode"].ToString());
ite.SubItems.Add(dr["助记符"].ToString());
ite.SubItems.Add(dr["科室"].ToString());
ite.SubItems.Add(dr["诊断名称"].ToString());
ite.SubItems.Add(dr["specificDiseases"].ToString());
ite.SubItems.Add(dr["isValid"].ToString());
listView2.Items.Add(ite);
}
}
}
listview
private void listView2_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == 13)
{
evaluate();
}
}
private void listView2_MouseDoubleClick(object sender, MouseEventArgs e)
{
this.evaluate();
}
方法
/// <summary>
/// 在dgv中显现listview2选中的数据
/// </summary>
private void evaluate()
{
int Rowindex = this.DgvDiagnosisList.CurrentRow.Index;
foreach (ListViewItem lv in this.listView2.SelectedItems)
{
DgvDiagnosisList.Rows[Rowindex].Cells["diagnoseEditID"].Value = "0";
DgvDiagnosisList.Rows[Rowindex].Cells["diagnoseID"].Value = lv.SubItems[0].Text;
DgvDiagnosisList.Rows[Rowindex].Cells["icdCode"].Value = lv.SubItems[1].Text;
DgvDiagnosisList.Rows[Rowindex].Cells["diagnosecode"].Value = lv.SubItems[2].Text;
DgvDiagnosisList.Rows[Rowindex].Cells["departmentName"].Value = lv.SubItems[3].Text;
DgvDiagnosisList.Rows[Rowindex].Cells["diagnoseName"].Value = lv.SubItems[4].Text;
DgvDiagnosisList.Rows[Rowindex].Cells["specificDiseases"].Value = lv.SubItems[5].Text;//特殊疾病
DgvDiagnosisList.Rows[Rowindex].Cells["isValid"].Value = lv.SubItems[6].Text;
diagnoseIDs = Convert.ToInt32(lv.SubItems[0].Text);
}
this.TextChangedBox.Visible = false;
this.listView2.Visible = false;
}
在winform中datagridview添加的时候增加空白行的时候，有两个办法
1：定义一个datatable，然后将数据绑定到这个datatable,然后实例化一个datarow，新增一行，最后将这一行增加到datatable里面，最后将datatable复制给datagridview
DataTable dtabel = datatable数据源
DataRow drow = dtabel .NewRow();
dtabel .Rows.Add(drow);
datagridview1.DataSource = dtabel ;
2:直接将datagridview的属性设置为：AllowUserToAddRows = true
但是这样有个问题，在增加新的一行的时候，输入文字的时候，又会出现新的一行
