如何用新值替换 {} 中的字符串 [关闭]

Question

string vehicleno="kl-12-22222";
DateTime dt = DateTime.Now;
string location = "Trivandrum";

我有一个来自数据库的字符串 string s = "（车辆编号）在 {Location Name} 的 {Time} 偏离 GeoFence。";

如何显示

kl-12-11111 has deviated from GeoFence at 12/29/2014 in Trivandrum 

在 C# 中？

Answer 1

将字符串输出放到你想要显示的输出方法中（不知道你是console app还是winforms还是别的）

string output = String.Format(  "{0} has deviated from GeoFence at {1} in {2}",vehicleno,dt.ToString(),location )

Answer 2

您可以使用String.Format方法，例如，

int vehicleNumber = 123;
DateTime time = DateTime.Now;
string locationName = "here";
string text = string.Format("{0} has deviated from GeoFence at {1} in {2}", vehicleNumber.ToString(), time.ToString("mm/dd/yyyy"), locationName);

Answer 3

如果你可以为你的模板使用不同的字符串，这样的事情会起作用：

string formattedText = string.Format(
    "{0} has deviated from GeoFence at {1} in {2}", 
    vehicleno, 
    dt.ToString("MM/dd/yyyy"), 
    location);

或者，您可以使用模板将 Replace() 调用链接在一起：

string formattedText = s.Replace("{Vehicle No}", vehicleno).Replace(...).Replace(...);