在我的道具档案中，我使用[{1}}属性将BUILD_VERSION传递给dotnet msbuild。但是，我对属性/p:BUILD_VERSION=1.2.3.4执行Substring操作时遇到错误，该操作的值来自：BuildVersion。
BUILD_VERSION我得到的错误是：<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<IntermediateOutputPath>./obj/</IntermediateOutputPath>
<BuildVersion>$(BUILD_VERSION)</BuildVersion>
<InformationalVersion>$(BuildVersion)</InformationalVersion>
<BuildMajorVersion>$([System.String]::Concat($(BuildVersion.Substring(0, $(BuildVersion.IndexOf('.')))), ".0.0.0"))</BuildMajorVersion>
<AssemblyVersion>$(BuildMajorVersion)</AssemblyVersion>
<AssemblyFileVersion>$(BuildMajorVersion)</AssemblyFileVersion>
</PropertyGroup>
我通过在""".Substring(0,-1)" length should be inside the string中打印BUILD_VERSION来检查Message是否存在。
<Target Name="SetBuildVersions" BeforeTargets="BeforeBuild">
<Message Importance="High" Text="BUILD_VERSION=$(BUILD_VERSION)"/>
</Target>
打印BUILD_VERSION=1.2.3.4。
如果我硬编码<BuildVersion>1.2.3.4</BuildVersion>而不是下面的<BuildVersion>$(BUILD_VERSION)</BuildVersion>，则可行。
如果我在Substring内使用Target代码，则可以使用
<Target Name="SetBuildVersions" BeforeTargets="BeforeBuild">
<PropertyGroup>
<InformationalVersion>$(BuildVersion)</InformationalVersion>
<BuildMajorVersionOnly>$([System.String]::Concat($(BuildVersion.Substring(0, $(BuildVersion.IndexOf('.')))), ".0.0.0"))</BuildMajorVersionOnly>
<AssemblyVersion>$(BuildMajorVersionOnly)</AssemblyVersion>
<AssemblyFileVersion>$(BuildMajorVersionOnly)</AssemblyFileVersion>
</PropertyGroup>
</Target>
为了Substring将PropertyGroup作为属性参数传递给BUILD_VERSION，为什么我不能在msbuild内使用 $(document).ready(function(){
var dataset;
var data;
var date;
var temp1 = [];
var temp2 = [];
var url = "https://raw.githubusercontent.com/FreeCodeCamp/ProjectReferenceData/master/GDP-data.json";
d3.json(url, function(json) {
dataset = json.data;
for (var j = 0; j < dataset.length; j++) {
temp1[j] = dataset[j][1]
}
data = temp1;
for (var j = 0; j < dataset.length; j++) {
temp2[j] = dataset[j][0]
}
date = temp2;
minDate = new Date(date[0]);
maxDate = new Date(date[date.length - 1]);
var svgWidth = 1000;
var svgHeight = 450;
var barWidth = (svgWidth/data.length);
var svg = d3.select("svg")
.attr("width", svgWidth)
.attr("height", svgHeight);
var xScale = d3.scaleTime()
.domain([minDate, maxDate])
.range([0, svgWidth]);
var yScale = d3.scaleLinear()
.domain([0, d3.max(data)])
.range([svgHeight, 0]);
var x_axis = d3.axisBottom()
.scale(xScale);
var y_axis = d3.axisRight()
.scale(yScale);
var xAxisTranslate = svgHeight - 20;
svg.append("g")
.attr("transform", "translate(0 " + xAxisTranslate +")")
.call(x_axis);
svg.append("g")
.attr("transform", "translate(0, -20)")
.call(y_axis);
var barChart = svg.selectAll("rect")
.data(data)
.enter()
.append("rect")
.attr("y", function(d) {
return yScale(d);
})
.attr("height", function(d) {
return svgHeight - yScale(d);
})
.attr("width", barWidth)
.attr("transform", function (d, i) {
var translate = [barWidth * i, - 20];
return "translate("+ translate +")";
});
});
});
？