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C#实现带进度条的ListView

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这篇文章主要介绍了C#实现带进度条的ListView 的相关资料,需要的朋友可以参考下

推荐阅读：listview 百分比进度条(delphi版）

对于已经有的组件，可以直接添加进来，添加后要先运行一下，然后会在工具箱内找到相应控件。

1、首先编写组件，然后将组件添加到工具箱内

C#实现带进度条的ListView

编写代码如下：

C#实现带进度条的ListView

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public partial class listviewex : system.windows.forms.listview
{
public listviewex()
{
initializecomponent();
}
//c# listview进度条显示
private color mprogresscolor = color.red;
public color progresscolor
{
get
{
return this.mprogresscolor;
}
set
{
this.mprogresscolor = value;
}
}
private color mprogresstextcolor = color.black;
public color progresstextcolor
{
get
{
return mprogresstextcolor;
}
set
{
mprogresstextcolor = value;
}
}
public int progresscolumindex
{
set
{
progressindex = value;
}
get
{
return progressindex;
}
}
int progressindex = -1;
const string numberstring = "0123456789.";
private bool checkisfloat(string s)
{
//c# listview进度条显示
foreach (char c in s)
{
if (numberstring.indexof(c) > -1)
{ continue; }
else return false;
}
return true;
}
protected override void dispose(bool disposing)
{
base.dispose(disposing);
}
//c# listview进度条显示
private void initializecomponent()
{
this.ownerdraw = true;
this.view = view.details;
}
protected override void ondrawcolumnheader(drawlistviewcolumnheadereventargs e)
{
e.drawdefault = true;
base.ondrawcolumnheader(e);
}
protected override void ondrawsubitem(drawlistviewsubitemeventargs e)
{
if (e.columnindex != this.progressindex)
{
e.drawdefault = true; base.ondrawsubitem(e);
}
else
{
if (checkisfloat(e.item.subitems[e.columnindex].text))
//判断当前subitem文本是否可以转为浮点数
{
float per = float.parse(e.item.subitems[e.columnindex].text);
if (per >= 1.0f) { per = per / 100.0f; }
rectangle rect = new rectangle(e.bounds.x, e.bounds.y, e.bounds.width, e.bounds.height);
drawprogress(rect, per, e.graphics);
}
}
}
//c# listview进度条显示 ///绘制进度条列的subitem
private void drawprogress(rectangle rect, float percent, graphics g)
{
if (rect.height > 2 && rect.width > 2)
{
if ((rect.top > 0 && rect.top < this.height) && (rect.left > this.left && rect.left < this.width))
{
//绘制进度
int width = (int)(rect.width * percent);
rectangle newrect = new rectangle(rect.left + 1, rect.top + 1, width - 2, rect.height - 2);
using (brush tmpb = new solidbrush(this.mprogresscolor))
{ g.fillrectangle(tmpb, newrect); }
newrect = new rectangle(rect.left + 1, rect.top + 1, rect.width - 2, rect.height - 2);
g.drawrectangle(pens.royalblue, newrect);
stringformat sf = new stringformat();
sf.alignment = stringalignment.center;
sf.linealignment = stringalignment.center;
sf.trimming = stringtrimming.ellipsischaracter;
newrect = new rectangle(rect.left + 1, rect.top + 1, rect.width - 2, rect.height - 2);
using (brush b = new solidbrush(mprogresstextcolor))
{
g.drawstring(percent.tostring("p1"), this.font, b, newrect, sf);
}
}
}
//c# listview进度条显示
else
{
return;
}
}
}

2、调用方法：

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private void form1_load(object sender, eventargs e)
{
listviewitem lviusername = new listviewitem();
listviewitem.listviewsubitem lvsinc = new listviewitem.listviewsubitem();
listviewitem.listviewsubitem lvsihostname = new listviewitem.listviewsubitem();
listviewitem.listviewsubitem lvsiip = new listviewitem.listviewsubitem();
lviusername.text = "5";
lvsinc.text = "4";
lvsihostname.text = "3";
lvsiip.text = "100";
lviusername.subitems.add(lvsinc);
lviusername.subitems.add(lvsihostname);
lviusername.subitems.add(lvsiip);
this.listview1.items.add(lviusername);
this.listview1.progresstextcolor = color.red;
this.listview1.progresscolor = color.yellowgreen;
}
private void listview1_drawsubitem(object sender, drawlistviewsubitemeventargs e)
{
//设置进度条的colunindex
this.listview1.progresscolumindex = 1;
}
private void timer1_tick(object sender, eventargs e)
{
if (convert.toint32(listview1.items[0].subitems[1].text.tostring()) <= 100)
{
//进度条数字更新
listview1.items[0].subitems[1].text = (convert.toint32(listview1.items[0].subitems[1].text.tostring()) + 1).tostring();
}
}

3、注意要添加timer控件

相应属性设置如下：

C#实现带进度条的ListView

4、运行结果如下所示

C#实现带进度条的ListView

以上所述是基于c#实现带进度条的listview ，希望对大家有所帮助。