private void UpdateListView(UpdateLVMethod method, int currentPage)
{
int TotalRecord = this.topDocs.scoreDocs.Length - ((this.currentPage - 1) * Static.PageItems); //总的数据项数
int EveryTimeRecord = 40; //每次批量增加的数量
int TotalTimes = TotalRecord / EveryTimeRecord; //批量添加的执行次数
int indexStart = (this.currentPage - 1) * Static.PageItems; //开始的index
int indexRecord = indexStart;
ScoreDoc[] scoreDocs = this.topDocs.scoreDocs;
for (int i = 0; i <= TotalTimes; i++)
{
if (this.isStopSearch == true)
{
return;
}
ListViewItem[] items;
if (i < TotalTimes) //i不是最后一次执行
{
method(out items, ref scoreDocs, ref indexRecord, EveryTimeRecord);
}
else
{
int lastQuantity = TotalRecord + indexStart - indexRecord;
method(out items, ref scoreDocs, ref indexRecord, lastQuantity);
}
CrossThreadOperateControl CrossUpdateListView = delegate()
{
lock (this.form.lvwFiles)
{
this.form.lvwFiles.BeginUpdate();
//利用AddRange批量增加，目的是减少刷屏次数，减轻不断闪烁问题。
this.form.lvwFiles.Items.AddRange(items);
this.form.lvwFiles.EndUpdate();
}
};
this.form.lvwFiles.Invoke(CrossUpdateListView);
}
}
/// <summary>
/// 获取当前页码所在页的数据并更新ListView
/// </summary>
public void GetCurrentPage()
{
try
{
this.topDocs = this.indexSearcher.Search(boolQuery, Static.PageItems * this.currentPage);
}
catch (Exception)
{
this.NullResult(); //空结果，修改主窗的status状态。
this.CallBack(); //线程执行完，修改主窗的相关属性。
return;
}
UpdateLVMethod method;
switch (this.searchMode)
{
case SearchMode.File:
method = new UpdateLVMethod(this.UpdateFileListView);
break;
case SearchMode.MP3:
method = new UpdateLVMethod(this.UpdateMP3ListView);
break;
default:
method = new UpdateLVMethod(this.UpdateMP3ListView);
break;
}
this.UpdateListView(method, this.currentPage);
CrossThreadOperateControl CrossOperate = delegate()
{
this.form.IsSearch = false;
this.form.索引ToolStripMenuItem.Enabled = true;
this.form.保存结果ToolStripMenuItem.Enabled = true;
};
this.form.Invoke(CrossOperate);
}
/// <summary>
/// 搜索文件
/// </summary>
public void SearchFile()
{
this.isStopSearch = false;
this.dtStart = DateTime.Now;//开始时间
if (this.indexSearcher == null)
{
this.NullResult(); //空结果，修改主窗的status状态。
this.CallBack(); //线程执行完，修改主窗的相关属性。
return;
}
Query query;
if (this.keyword.Name != "")
{
try
{
QueryParser parser = new QueryParser("Name", this.analyzer);
query = parser.Parse(this.keyword.Name);
boolQuery.Add(query, BooleanClause.Occur.MUST);
}
catch (Exception)
{ }
}
if (this.keyword.Directory != null && this.keyword.Directory != "")
{
PrefixQuery pq = new PrefixQuery(new Term("Directory", this.keyword.Directory));
boolQuery.Add(pq, BooleanClause.Occur.MUST);
}
if (this.keyword.Extension != null && this.keyword.Extension != "")
{
TermQuery termQuery = new TermQuery(new Term("Extension", this.keyword.Extension));
boolQuery.Add(termQuery, BooleanClause.Occur.MUST);
}
try
{
//搜索前Static.PageItems项
this.topDocs = this.indexSearcher.Search(boolQuery, Static.PageItems);
}
catch (Exception)
{
this.NullResult(); //空结果，修改主窗的status状态。
this.CallBack(); //线程执行完，修改主窗的相关属性。
return;
}
this.dtStop = DateTime.Now;//完成时间
if (this.topDocs.totalHits > 0)
{
CrossThreadOperateControl CrossUpdateStatus = delegate()
{
lock (this.form.tsslStatus)
{
this.form.OrginalStatusText = Deal.ToEnglishNumString(this.topDocs.totalHits)
+ " 个对象 用时：" + (this.dtStop - this.dtStart).TotalSeconds + "秒";
this.form.tsslStatus.Text = Deal.LimitStringLength(this.form.OrginalStatusText,
this.form.TsslLength);
}
};
this.form.Invoke(CrossUpdateStatus);
}
else
{
this.NullResult(); //空结果，修改主窗的status状态。
this.CallBack(); //线程执行完，修改主窗的相关属性。
return;
}
this.pageNums = topDocs.totalHits / Static.PageItems + 1; //总的页数
this.currentPage = 1; //每次搜索时当前页数为1
UpdateLVMethod method = new UpdateLVMethod(this.UpdateFileListView);
this.UpdateListView(method, this.currentPage);
this.CallBack();//线程执行完，修改主窗的相关属性。
}
private void UpdateListView(UpdateLVMethod method, int currentPage)
{
int TotalRecord = this.topDocs.scoreDocs.Length - ((this.currentPage - 1) * Static.PageItems);//总的数据项数
int EveryTimeRecord = 40; //每次批量增加的数量
int TotalTimes = TotalRecord / EveryTimeRecord;//批量添加的执行次数
int indexStart = (this.currentPage - 1) * Static.PageItems;//开始的index
int indexRecord = indexStart;
ScoreDoc[] scoreDocs = this.topDocs.scoreDocs;
for (int i = 0; i <= TotalTimes; i++)
{
if (this.isStopSearch == true)
return;
ListViewItem[] items;
if (i < TotalTimes) //i不是最后一次执行
{
method(out items, ref scoreDocs, ref indexRecord, EveryTimeRecord);
}
else
{
int lastQuantity = TotalRecord + indexStart - indexRecord;
method(out items, ref scoreDocs, ref indexRecord, lastQuantity);
}
CrossThreadOperateControl CrossUpdateListView = delegate()
{
lock (this.form.lvwFiles)
{
this.form.lvwFiles.BeginUpdate();
//利用AddRange批量增加，目的是减少刷屏次数，减轻不断闪烁问题。
this.form.lvwFiles.Items.AddRange(items);
this.form.lvwFiles.EndUpdate();
}
};
this.form.lvwFiles.Invoke(CrossUpdateListView);
}
}
/// <summary>
/// 搜索MP3
/// </summary>
public void SearchMP3()
{
this.isStopSearch = false;
this.dtStart = DateTime.Now;//搜索开始
if (this.indexSearcher == null)
{
this.NullResult();//空结果，修改主窗的status状态。
this.CallBack();//线程执行完，修改主窗的相关属性。
return;
}
Query query;
if (this.keyword.Name != "")
{
try
{
MultiFieldQueryParser parser = new MultiFieldQueryParser(this.mp3Fields, this.analyzer);
query = parser.Parse(this.keyword.Name);
boolQuery.Add(query, BooleanClause.Occur.MUST);
}
catch (Exception)
{ }
}
if (this.keyword.Directory != null && this.keyword.Directory != "")
{
PrefixQuery pq = new PrefixQuery(new Term("Directory", this.keyword.Directory));
boolQuery.Add(pq, BooleanClause.Occur.MUST);
}
if (this.keyword.Artist != null)
{
TermQuery term = new TermQuery(new Term("ArtistStore", this.keyword.Artist));
boolQuery.Add(term, BooleanClause.Occur.MUST);
}
try
{
//搜索前Static.PageItems项
this.topDocs = this.indexSearcher.Search(boolQuery, Static.PageItems);
}
catch (Exception)
{
this.NullResult();//空结果，修改主窗的status状态。
this.CallBack();//线程执行完，修改主窗的相关属性。
return;
}
this.dtStop = DateTime.Now;//完成时间
if (this.topDocs.totalHits > 0)
{
CrossThreadOperateControl CrossUpdateStatus = delegate()
{
this.form.OrginalStatusText = Deal.ToEnglishNumString(this.topDocs.totalHits)
+ " 个对象 用时：" + (this.dtStop - this.dtStart).TotalSeconds + "秒";
this.form.tsslStatus.Text = Deal.LimitStringLength(this.form.OrginalStatusText,
this.form.TsslLength);
};
this.form.Invoke(CrossUpdateStatus);
}
else
{
this.NullResult();//空结果，修改主窗的status状态。
this.CallBack();//线程执行完，修改主窗的相关属性。
return;
}
this.pageNums = topDocs.totalHits / Static.PageItems + 1;//总的页数
this.currentPage = 1;//每次搜索时当前页数为1
UpdateLVMethod method = new UpdateLVMethod(this.UpdateMP3ListView);
this.UpdateListView(method, this.currentPage);
this.CallBack();//线程执行完，修改主窗的相关属性。
}
/// <summary>
/// 获取当前页码所在页的数据并更新ListView
/// </summary>
public void GetCurrentPage()
{
try
{
this.topDocs = this.indexSearcher.Search(boolQuery, Static.PageItems * this.currentPage);
}
catch (Exception)
{
this.NullResult();//空结果，修改主窗的status状态。
this.CallBack();//线程执行完，修改主窗的相关属性。
return;
}
UpdateLVMethod method;
switch (this.searchMode)
{
case SearchMode.File:
method = new UpdateLVMethod(this.UpdateFileListView);
break;
case SearchMode.MP3:
method = new UpdateLVMethod(this.UpdateMP3ListView);
break;
default:
method = new UpdateLVMethod(this.UpdateMP3ListView);
break;
}
this.UpdateListView(method, this.currentPage);
CrossThreadOperateControl CrossOperate = delegate()
{
this.form.IsSearch = false;
this.form.索引ToolStripMenuItem.Enabled = true;
this.form.保存结果ToolStripMenuItem.Enabled = true;
};
this.form.Invoke(CrossOperate);
}
