C# 解决EXCEL单元格合并,行高无法自适应问题

public static float getExcelCellAutoHeight(string strtest, float fontCountInline)
{
float defaultRowHeight = 18.00f;//每一行的高度指定
float defaultCount = 0.00f;
for (int i = 0; i <strtest.Length; i++)
{
float ff = getRegex(strtest.Substring(i, 1));
defaultCount = defaultCount + ff;
}
return ((int)(defaultCount / fontCountInline) + 1) * defaultRowHeight;//计算
}

public static float getRegex(string charStr)
{

if (charStr == " ")
{
return 0.5f;
}
// 判断是否为字母或字符
if (Regex.IsMatch(charStr, "^[A-Za-z0-9]+$"))
{
return 0.5f;
}
// 判断是否为全角
if (Regex.IsMatch(charStr, "[\u4e00-\u9fa5]+$"))
{
return 1.00f;
}
//全角符号 及中文
if (Regex.IsMatch(charStr, "[^x00-xff]"))
{
return 1.00f;
}
return 0.5f;

}

Excel.Range range = ews.get_Range("C" + (12 + indexRow * 10), "H" + 12 + indexRow * 10);
range.RowHeight = getExcelCellAutoHeight(ProStageName + "", 36f);