Objectlistview如何更改组头中的文本？

Question

我想更改组标题的名称,但我无法在文档或谷歌上找到任何解决方案.

标题中的文本应该是在组中总结的时间.

这是它应该是这样的:

Answer 1

标题中的文本应该是在组中总结的时间.

没问题 :)

olv.AboutToCreateGroups += delegate(object sender, CreateGroupsEventArgs args) {
    foreach (OLVGroup olvGroup in args.Groups) {
        int totalTime = 0;

        foreach (OLVListItem item in olvGroup.Items) {
            // change this block accordingly
             MyRowObjectType rowObject = item.RowObject as MyRowObjectType;
             totalTime += rowObject.MyNumericProperty;
            // change this block accordingly
        }

        olvGroup.Header += String.Format(" (Total time = {0})", totalTime);
    }
};