为什么DataGridView这么慢? [英] Why is DataGridView so slow?
问题描述
我创建了一个数据绑定DataGrid,然后研究了DataGridView,发现它更符合我的需求。我有一个DataGridViewCheckBoxColumn作为我的DataGridView中的第一列,然后将其数据源设置为DataSet。有时,DataSet可能包含超过1000行的表。用户有一个按钮,可以选择DataGridView中的所有复选框。我的foreach循环用DataGridView完成此任务大约需要5分钟。使用DataGrid,它是毫秒。到底是怎么回事?有什么建议?以下是一些代码。
I created a databound DataGrid, and then researched DataGridView to find it would fit my needs better. I have a DataGridViewCheckBoxColumn as my first column in my DataGridView then set its datasource to a DataSet. Sometimes the DataSet may contain a table with over 1000 rows. The user has a button that will select all checkboxes in the DataGridView. It takes about 5 minutes for my foreach loop to complete this task with the DataGridView. With the DataGrid, it was milli-seconds. What is going on? Any suggestions? Here is some of the code.
提前致谢,
ryan
//我的DataGridViewCheckBoxColumn truevalue = 1
//my DataGridViewCheckBoxColumn truevalue = 1
foreach ( DataGridViewRow dgr in dtgPolicies.Rows)
foreach(DataGridViewRow dgr in dtgPolicies.Rows)
{
{
DataGridViewCell dgc =( DataGridViewCell )dgr.Cells [ " O" ];
DataGridViewCell dgc = (DataGridViewCell)dgr.Cells["O"];
dgc.Value = 1 ;
dgc.Value = 1;
}
推荐答案
不太相似重新考虑DataGridView的这种行为,但是如果正在使用的DataGridView绑定到某些DataSource,那么更新DataSource所有行中列的值就不会给你带来这种性能延迟。
希望这有帮助!!
-Jay
这篇关于为什么DataGridView这么慢?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!