我通常用GridView绑定datatable,由于需要动态绑定到不同的datatable所以需要动态调整GridView的宽度。所以写了这个函数实现该功能。GridView的宽度需要根据各个列中最大宽度来累加获得。在求各个列的最大字符宽度的时候需要对中文和英文加以区分,因为字符串“序号”和“id”的length属性都为2,但是显示的时候一个汉字占据的宽度却相当于2个英文字符。要想达到准确的显示效果,我对含有汉字的字符串根据汉字的数目确定该字符串等价英文字符的长度,例如字符串“序号id”的length属性为4,我自己通过函数获得的长度为6.确定了每列的最大字符数后,累加即可获得GridView的宽度字符,然后乘于一个字符在屏幕上的显示宽度oneLetterLength常量后就是GridView宽度。
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