组合框返回“文本" [英] combobox return with 'text'

问题描述

我在查询中使用combobox.selecteditem，它在引号中返回TEXT表示"TEXT"，但我需要不带引号的TEXT.

i use combobox.selecteditem in query, it return TEXT in quote mean "TEXT" but i need it without Quote as TEXT.

推荐答案

在C#中使用双引号用于包围string literals.因此，这里"TEXT"是字符串文字.当将此字符串写入UI或打印到输出介质(例如Report 或a File.)时，双引号将不会出现，例如

In C# double quotes are used to enclose string literals. So here "TEXT" is a string literal. The double quotes will not appear when this string is written to UI or printed to an out put medium say Report or a File. eg.

Label1.Text = "TEXT";
System.IO.File.WriteAllText(fileName,"TEXT");

如果删除了双引号，则它将表示一个variable ，它可以保存原始数据类型或对象的值，该对象可以是struct或class等的实例.

If the double quotes are removed then it will represent a variable which can hold the value of premitive data type or an object which may be an instance of struct or class etc.

var TEXT = "This is text";
var TEXT = new MyClass();

如果您的要求是使用返回的string value作为variable ，则Reflection 可能会有所帮助，并且这些文章
反射(C#编程指南) [ .NET中的反射 [ C#教程中的反思 [

If your requirement is to use the string value returned as a variable then the Reflection may be helpful and these articles
Reflection (C# Programming Guide)[^]
Reflection in .NET[^]
Reflection in C# Tutorial[^]
may be helpful.

这篇关于组合框返回“文本"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！