System.FormatException未处理 [英] System.FormatException was unhandled

问题描述

我正在尝试更改RichTextBox字体，样式，大小如下。但是在运行时间期间发生异常，如果是条件，则在最后一个错误是输入字符串格式不正确。

I'm trying change RichTextBox font, style, size as below. But exception occurred during at run time in last else if condition. An error is "Input string was not in a correct format."

public void FontFormation()
        {
            if (FontStyle.Bold.ToString() == ddlFontStyle.Text.ToString())
            {
                rchtxtMainBody.Font = new System.Drawing.Font(ddlFont.Text.ToString().Trim(), Convert.ToUInt32(ddlFontSize.Text), FontStyle.Bold);
            }
            else if(FontStyle.Italic.ToString() == ddlFontStyle.Text.ToString())
            {
                rchtxtMainBody.Font = new System.Drawing.Font(ddlFont.Text.ToString().Trim(), Convert.ToUInt32(ddlFontSize.Text), FontStyle.Italic);
            }
            else if(FontStyle.Regular.ToString() == ddlFontStyle.Text.ToString())
            {
                rchtxtMainBody.Font = new System.Drawing.Font(ddlFont.Text.ToString().Trim(), Convert.ToUInt32(ddlFontSize.Text), FontStyle.Regular);
            }
        }

在我的代码中，前两个条件正在执行而没有错误，但最后一个条件单独显示上述错误。如果我删除我的最后一个if条件，即FontStyle.Regular.ToString（）== ddlFontStyle.Text。代码执行没有任何错误。



Plz告诉我如何解决这个问题。

In my code first two conditions are executing without error but last one alone showing aforesaid error. If i remove my last else if condition i.e FontStyle.Regular.ToString()== ddlFontStyle.Text. code is getting executed without any error.

Plz tell me how to fix this.

推荐答案

困难确定不知道究竟发生了什么，以及它在抱怨哪一行，但我会看一下你下拉列表中的字体大小 - 检查没有小数点（例如8.5）或后缀（例如10pt）。



我也会重构该代码：在例程的顶部进行一次转换，并停止将Text属性转换为stings - 它们已经是字符串，因此只会使代码混乱。

Difficult to be certain without knowing exactly what else is going on, and which line it is complaining about, but I would look at the font sizes in you drop down list - check that there are no decimal points ("8.5" for example) or suffixes ("10pt" for example).

I would also refactor that code: do the conversion once, at the top of the routine, and stop converting Text properties to stings - they are strings already, so that just clutters up your code.

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