c# - ObjectListView 全选复选框

Question

我有一个带有一些选项卡的 ObjectListView，其中一个是作业编号。此作业编号选项卡从数据库中获取作业编号，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作业编号选项卡上添加一个复选框。在选中该复选框时，它应该选择它下面的所有作业编号。即，将选中每个作业编号复选框。有什么办法可以做到这一点..我将分享一个屏幕截图以供引用..

Answer 1

你需要监听checkitem事件，然后找到哪个事件被选中了，然后检查这个下面的。 (我假设带有“工作编号”> 的工作在下方，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);
        }
    }
}