//删除选中行
private void Deletedata()
{
string stridcolumname = dgrdUp.Columns[0].HeaderText; //获取主键名
string value = dgrdUp.Rows[dgrdUp.CurrentRow.Index].Cells[0].Value.ToString(); //获取选中行第一列值
string deletesql = "delete from " + tablename + " where " + stridcolumname + "='" + value + "'";
AppServer.ExecuteNonQuery(deletesql);
//再更新datagridview
dt = AppServer.SelData(sql);
SelectTodgv();
}
//单元格内容改变
private void dgrdUp_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
try
{
string strcomm; //sql
string stridcolumname = dgrdUp.Columns[0].HeaderText; //获取主键名
string strcolumn = dgrdUp.Columns[e.ColumnIndex].HeaderText; //获取列标题
string strrow = dgrdUp.Rows[e.RowIndex].Cells[0].Value.ToString(); //获取焦点触发行的第一个值
string value = dgrdUp.CurrentCell.Value.ToString(); //获取当前点击的活动单元格的值
if (e.ColumnIndex == 0 && dgrdUp.Columns[0].HeaderText.ToLower() == "id")
{
MessageBox.Show("ID列不能输入数值!");
dgrdUp.CurrentCell.Value = null;
return;
}
//判断是否是空行
if ((newrowid - 1) == e.RowIndex && datarownull(e.RowIndex, e.ColumnIndex))
{
//如果新增的不是第一列 并且第一列不是id列 提示需要先新增第一列
if (e.ColumnIndex != 0 && dgrdUp.Columns[0].HeaderText.ToLower() != "id")
{
MessageBox.Show("需要先输入 " + stridcolumname + " 的值!");
return;
}
strcomm = "insert into " + tablename + " (" + strcolumn + ") values('" + value + "')";
}
else
{
//第一列不能编辑
if (e.ColumnIndex == 0)
{
MessageBox.Show("第一列" + stridcolumname + "的值不能编辑!");
return;
}
strcomm = "update " + tablename + " set " + strcolumn + " ='" + value + "' where " + stridcolumname + " = '" + strrow + "'";
}
AppServer.ExecuteNonQuery(strcomm);
//再更新datagridview
dt = AppServer.SelData(sql);
SelectTodgv();
}
catch (Exception ee)
{
MessageBox.Show(ee.Message.ToString());
}
}