ObjectListView选择所有复选框

Question

我有一个带有一些Tabs的ObjectListView，其中一个是Job number。此作业编号选项卡从数据库中提取作业编号，并在每个作业编号旁边显示一个复选框。我的要求是我想在该“职务编号”选项卡上添加一个复选框。在选中该复选框时，它应选择它下面的所有作业号。即，将选中每个作业号复选框.. 有什么方法可以实现这一点..我将分享一个屏幕截图供参考..

Answer 1

您需要收听checkitem事件，然后查找已检查的事件，然后检查下面的事件。 （我假设工作编号＆＃34;＆＃34;＆gt;的工作比检查项目低，需要检查。）

private void objectListView1_ItemChecked(object sender, ItemCheckedEventArgs e)
{
    //First we need to cast the received object to an OLVListItem
    BrightIdeasSoftware.OLVListItem olvItem = e.Item as BrightIdeasSoftware.OLVListItem;
    if (olvItem == null)
        return;    //Unable to cast

    //Now we can cast the RowObject as our class
    MyClass my = olvItem.RowObject as MyClass;
    if (my == null)
        return;   //unable to cast

    //We retrieve the jobnumber.  So this is the job number of the item clicked
    int jobNumber = my.Job; 

    //Now loop through all of our objects in the ObjectListView
    foreach(var found in objectListView1.Objects)
    {
        //cast it to our type of object
        MyClass mt = found as MyClass;

        //Compare to our job number, if greater then we check/uncheck the items
        if (mt.Job > jobNumber)
        {
            if (e.Item.Checked)
                objectListView1.CheckObject(mt);
            else
                objectListView1.UncheckObject(mt);
        }
    }
}