C# .NET RichTextBox GetCharOffsetFromPosition？

发布于 2024-11-13 03:03:02 字数 455 浏览 4 评论 0原文

有没有办法获得字符相对于某个位置的偏移量？

我有一个看起来像这样的框 -

Polynomial in a richtextbox

我想逐个字符地解析它但我想检测它何时是上标（我通过将 SelectionCharOffset 设置为 10 来实现

我所拥有的是一个看起来像的循环这样我就可以使用 i 访问该位置

for (int i = 0; i < Text1.TextLength; i++) {
     //I can use things here like Text1.Text[i]...
}

原文

Is there a way to get character offset from a position?

I have a box that looks like this -

Polynomial in a richtextbox

I want to parse it character by character but I want to detect when it is superscript (which I achieved by setting SelectionCharOffset to 10

What I have is a loop that looks like this so I can acces the position with i

for (int i = 0; i < Text1.TextLength; i++) {
     //I can use things here like Text1.Text[i]...
}

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咿呀咿呀哟 2024-11-20 03:03:02

与您实现上标的方式相同。

使用 SelectionCharOffset 属性（连同 SelectionStart 和 SelectionLength 一次选择一个字符）并查看其是否为正数（因为正数表示上标，负数表示下标）。

for (int i = 0; i < Text1.TextLength; i++)
{
    Text1.SelectionStart = i;
    Text1.SelectionLength = 1;

    if (Text1.SelectionCharOffset > 0)
    {
        ...
    }
}

The same way you achieved superscript.

Use the SelectionCharOffset property (along with SelectionStart and SelectionLength to select one character at a time) and see if its a positive number (since positive represents superscript and negative represents subscript).

for (int i = 0; i < Text1.TextLength; i++)
{
    Text1.SelectionStart = i;
    Text1.SelectionLength = 1;

    if (Text1.SelectionCharOffset > 0)
    {
        ...
    }
}

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