效果如下：
鄙人虽然开发wpf有些时间，但之前一直是一些简单template和style改改之类的工作，并没有深入研究过。此次为了完成工作，首先也是网上搜了半天，没有找到合适的代码直接拷贝（搜索能力待提高），干脆就直接静下心来琢磨琢磨。
一开始在界面上就放了slider，挠挠头，怎么修改template才能达到效果呢？后来想到了blend，之前一直听说很强大的界面设计工具，但是一直没有用过，就趁此机会就简单运用了一下。blend中很牛逼的就是编辑模板，通过创建模板副本，可以看到slider结构
结合代码发现，thumb左右两边的reapeatbutton的宽度会随着thumb的位置会变化。那问题就变得简单很多，修改左repeatbutton的template就可以达到目的，核心代码如下。
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<style x:key="decreasebtn" targettype="{x:type repeatbutton}">
<setter property="template">
<setter.value>
<controltemplate targettype="{x:type repeatbutton}">
<border background="{templatebinding background}"
height="{templatebinding height}" width="{templatebinding width}">
<!--轨迹，设置background-->
<border margin="0,0,-1,0" background="{staticresource sliderthumb.track.decreasebackground}"
verticalalignment="center" height="4.0" />
</border>
</controltemplate>
</setter.value>
</setter>
</style>
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完整代码(只是考虑水平的slider)：
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<resourcedictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<solidcolorbrush x:key="sliderthumb.static.foreground" color="#ffe5e5e5"/>
<solidcolorbrush x:key="sliderthumb.mouseover.background" color="gray"/>
<solidcolorbrush x:key="sliderthumb.mouseover.border" color="#ff7eb4ea"/>
<solidcolorbrush x:key="sliderthumb.pressed.background" color="gray"/>
<solidcolorbrush x:key="sliderthumb.pressed.border" color="gray"/>
<solidcolorbrush x:key="sliderthumb.disabled.background" color="#fff0f0f0"/>
<solidcolorbrush x:key="sliderthumb.disabled.border" color="#ffd9d9d9"/>
<solidcolorbrush x:key="sliderthumb.static.background" color="#989898"/>
<controltemplate x:key="sliderthumbhorizontaltop" targettype="{x:type thumb}">
<grid horizontalalignment="center" uselayoutrounding="true" verticalalignment="center">
<path x:name="grip" data="m 0,6 c0,6 5.5,0 5.5,0 5.5,0 11,6 11,6 11,6 11,18 11,18 11,18 0,18 0,18 0,18 0,6 0,6 z"
fill="{staticresource sliderthumb.static.background}"
stretch="fill" snapstodevicepixels="true"
stroke="{binding path=fill, relativesource={x:static relativesource.self}}" strokethickness="1" uselayoutrounding="true" verticalalignment="center"/>
</grid>
<controltemplate.triggers>
<trigger property="ismouseover" value="true">
<setter property="fill" targetname="grip" value="{staticresource sliderthumb.mouseover.background}"/>
<setter property="stroke" targetname="grip" value="{staticresource sliderthumb.mouseover.border}"/>
</trigger>
<trigger property="isdragging" value="true">
<setter property="fill" targetname="grip" value="{staticresource sliderthumb.pressed.background}"/>
<setter property="stroke" targetname="grip" value="{staticresource sliderthumb.pressed.border}"/>
</trigger>
<trigger property="isenabled" value="false">
<setter property="fill" targetname="grip" value="{staticresource sliderthumb.disabled.background}"/>
<setter property="stroke" targetname="grip" value="{staticresource sliderthumb.disabled.border}"/>
</trigger>
</controltemplate.triggers>
</controltemplate>
<controltemplate x:key="sliderthumbhorizontalbottom" targettype="{x:type thumb}">
<grid horizontalalignment="center" uselayoutrounding="true" verticalalignment="center">
<path x:name="grip" data="m 0,12 c0,12 5.5,18 5.5,18 5.5,18 11,12 11,12 11,12 11,0 11,0 11,0 0,0 0,0 0,0 0,12 0,12 z"
fill="{staticresource sliderthumb.static.background}"
stretch="fill"
snapstodevicepixels="true"
stroke="{binding path=fill, relativesource={x:static relativesource.self}}" strokethickness="1" uselayoutrounding="true" verticalalignment="center"/>
</grid>
<controltemplate.triggers>
<trigger property="ismouseover" value="true">
<setter property="fill" targetname="grip" value="{staticresource sliderthumb.mouseover.background}"/>
<setter property="stroke" targetname="grip" value="{staticresource sliderthumb.mouseover.border}"/>
</trigger>
<trigger property="isdragging" value="true">
<setter property="fill" targetname="grip" value="{staticresource sliderthumb.pressed.background}"/>
<setter property="stroke" targetname="grip" value="{staticresource sliderthumb.pressed.border}"/>
</trigger>
<trigger property="isenabled" value="false">
<setter property="fill" targetname="grip" value="{staticresource sliderthumb.disabled.background}"/>
<setter property="stroke" targetname="grip" value="{staticresource sliderthumb.disabled.border}"/>
</trigger>
</controltemplate.triggers>
</controltemplate>
<solidcolorbrush x:key="sliderthumb.track.background" color="#b6b6b6"/>
<solidcolorbrush x:key="sliderthumb.track.decreasebackground" color="#45db5e"/>
<style x:key="repeatbuttontransparent" targettype="{x:type repeatbutton}">
<setter property="overridesdefaultstyle" value="true"/>
<setter property="background" value="transparent"/>
<setter property="focusable" value="false"/>
<setter property="istabstop" value="false"/>
</style>
<style x:key="decreasebtn" targettype="{x:type repeatbutton}" basedon="{staticresource repeatbuttontransparent}">
<setter property="template">
<setter.value>
<controltemplate targettype="{x:type repeatbutton}">
<border background="{templatebinding background}" height="{templatebinding height}" width="{templatebinding width}">
<border margin="1,0,-1,0" background="{staticresource sliderthumb.track.decreasebackground}"
verticalalignment="center" height="4.0" />
</border>
</controltemplate>
</setter.value>
</setter>
</style>
<style x:key="increasebtn" targettype="{x:type repeatbutton}" basedon="{staticresource repeatbuttontransparent}">
<setter property="template">
<setter.value>
<controltemplate targettype="{x:type repeatbutton}">
<border background="{templatebinding background}" height="{templatebinding height}" width="{templatebinding width}"/>
</controltemplate>
</setter.value>
</setter>
</style>
<controltemplate x:key="sliderthumbhorizontaldefault" targettype="{x:type thumb}">
<grid horizontalalignment="center" uselayoutrounding="true" verticalalignment="center">
<path x:name="grip" data="m0 512c0 229.230208 229.805588 0 512 0 794.769792 0 1024 229.805588 1024 512 1024 794.769792 794.194412 1024 512 1024 229.230208 1024 0 794.194412 0 512z"
strokethickness="1" fill="{staticresource sliderthumb.static.background}" stroke="{binding path=fill, relativesource={x:static relativesource.self}}"
width="18" height="{binding path=width, relativesource={x:static relativesource.self}}"
stretch="fill" snapstodevicepixels="true" uselayoutrounding="true" verticalalignment="center"/>
</grid>
<controltemplate.triggers>
<trigger property="ismouseover" value="true">
<setter property="fill" targetname="grip" value="{staticresource sliderthumb.mouseover.background}"/>
</trigger>
<trigger property="isdragging" value="true">
<setter property="fill" targetname="grip" value="{staticresource sliderthumb.pressed.background}"/>
<setter property="stroke" targetname="grip" value="{staticresource sliderthumb.pressed.border}"/>
</trigger>
<trigger property="isenabled" value="false">
<setter property="fill" targetname="grip" value="{staticresource sliderthumb.disabled.background}"/>
<setter property="stroke" targetname="grip" value="{staticresource sliderthumb.disabled.border}"/>
</trigger>
</controltemplate.triggers>
</controltemplate>
<controltemplate x:key="sliderhorizontal" targettype="{x:type slider}">
<border x:name="border" borderbrush="{templatebinding borderbrush}"
borderthickness="{templatebinding borderthickness}" background="{templatebinding background}" snapstodevicepixels="true">
<grid>
<grid.rowdefinitions>
<rowdefinition height="15"/>
<rowdefinition height="auto" minheight="{templatebinding minheight}"/>
<rowdefinition height="15"/>
</grid.rowdefinitions>
<tickbar x:name="toptick" fill="{templatebinding foreground}" height="4" margin="0,0,0,2" placement="top" grid.row="0"
visibility="collapsed"/>
<tickbar x:name="bottomtick" fill="{templatebinding foreground}" height="4" margin="0,2,0,0" placement="bottom" grid.row="2"
visibility="collapsed"/>
<border x:name="trackbackground" borderbrush="{staticresource sliderthumb.track.background}"
borderthickness="1" background="{binding path=borderbrush, relativesource={x:static relativesource.self}}"
height="4.0" margin="5,0" grid.row="1" verticalalignment="center">
<canvas horizontalalignment="stretch" margin="0,-1">
<rectangle x:name="part_selectionrange" fill="{dynamicresource {x:static systemcolors.highlightbrushkey}}"
height="{binding path=height, elementname=trackbackground}" visibility="hidden"/>
</canvas>
</border>
<track x:name="part_track" grid.row="1">
<track.decreaserepeatbutton>
<repeatbutton command="{x:static slider.decreaselarge}" style="{staticresource decreasebtn}"/>
</track.decreaserepeatbutton>
<track.increaserepeatbutton>
<repeatbutton command="{x:static slider.increaselarge}" style="{staticresource increasebtn}"/>
</track.increaserepeatbutton>
<track.thumb>
<thumb x:name="thumb" focusable="false" height="20" overridesdefaultstyle="true"
template="{staticresource sliderthumbhorizontaldefault}" verticalalignment="center"
width="{binding path=height, relativesource={x:static relativesource.self}}"/>
</track.thumb>
</track>
</grid>
</border>
<controltemplate.triggers>
<trigger property="tickplacement" value="topleft">
<setter property="visibility" targetname="toptick" value="visible"/>
<setter property="template" targetname="thumb" value="{staticresource sliderthumbhorizontaltop}"/>
<setter property="margin" targetname="trackbackground" value="5,2,5,0"/>
</trigger>
<trigger property="tickplacement" value="bottomright">
<setter property="visibility" targetname="bottomtick" value="visible"/>
<setter property="template" targetname="thumb" value="{staticresource sliderthumbhorizontalbottom}"/>
<setter property="margin" targetname="trackbackground" value="5,0,5,2"/>
</trigger>
<trigger property="tickplacement" value="both">
<setter property="visibility" targetname="toptick" value="visible"/>
<setter property="visibility" targetname="bottomtick" value="visible"/>
</trigger>
<trigger property="isselectionrangeenabled" value="true">
<setter property="visibility" targetname="part_selectionrange" value="visible"/>
</trigger>
</controltemplate.triggers>
</controltemplate>
<style x:key="sliderstyle" targettype="{x:type slider}">
<setter property="stylus.ispressandholdenabled" value="false"/>
<setter property="background" value="transparent"/>
<setter property="borderbrush" value="transparent"/>
<setter property="template" value="{staticresource sliderhorizontal}"/>
</style>
</resourcedictionary>
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其实最重要的还是控件的结构，只要对此很熟悉，做出理想的控件应该不难。
总结
以上所述是小编给大家介绍的wpf slider滑动条的颜色修改方法，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！
原文链接：https://www.cnblogs.com/hbatjzyb/archive/2018/08/01/9401218.html