如何在c#中将数值转换为Excel列名,而不使用直接从Excel中获取值的自动化。
Excel 2007的范围可能是1到16384,这是它支持的列数。结果值应以excel列名的形式出现,例如A、AA、AAA等。
如何在c#中将数值转换为Excel列名,而不使用直接从Excel中获取值的自动化。
Excel 2007的范围可能是1到16384,这是它支持的列数。结果值应以excel列名的形式出现,例如A、AA、AAA等。
当前回答
Objective-C实现:
-(NSString*)getColumnName:(int)n {
NSString *name = @"";
while (n>0) {
n--;
char c = (char)('A' + n%26);
name = [NSString stringWithFormat:@"%c%@",c,name];
n = n/26;
}
return name;
}
迅速实现:
func getColumnName(n:Int)->String{
var columnName = ""
var index = n
while index>0 {
index--
let char = Character(UnicodeScalar(65 + index%26))
columnName = "\(char)\(columnName)"
index = index / 26
}
return columnName
}
答案是基于:https://stackoverflow.com/a/4532562/2231118
其他回答
我想在我使用的静态类中加入,用于在col index和col Label之间进行交互。我对ColumnLabel方法使用了修改后的可接受答案
public static class Extensions
{
public static string ColumnLabel(this int col)
{
var dividend = col;
var columnLabel = string.Empty;
int modulo;
while (dividend > 0)
{
modulo = (dividend - 1) % 26;
columnLabel = Convert.ToChar(65 + modulo).ToString() + columnLabel;
dividend = (int)((dividend - modulo) / 26);
}
return columnLabel;
}
public static int ColumnIndex(this string colLabel)
{
// "AD" (1 * 26^1) + (4 * 26^0) ...
var colIndex = 0;
for(int ind = 0, pow = colLabel.Count()-1; ind < colLabel.Count(); ++ind, --pow)
{
var cVal = Convert.ToInt32(colLabel[ind]) - 64; //col A is index 1
colIndex += cVal * ((int)Math.Pow(26, pow));
}
return colIndex;
}
}
用这个…
30.ColumnLabel(); // "AD"
"AD".ColumnIndex(); // 30
Objective-C实现:
-(NSString*)getColumnName:(int)n {
NSString *name = @"";
while (n>0) {
n--;
char c = (char)('A' + n%26);
name = [NSString stringWithFormat:@"%c%@",c,name];
n = n/26;
}
return name;
}
迅速实现:
func getColumnName(n:Int)->String{
var columnName = ""
var index = n
while index>0 {
index--
let char = Character(UnicodeScalar(65 + index%26))
columnName = "\(char)\(columnName)"
index = index / 26
}
return columnName
}
答案是基于:https://stackoverflow.com/a/4532562/2231118
(我知道这个问题与c#有关,但是,如果读者需要用Java做同样的事情,那么下面的内容可能会有用)
事实证明,使用Jakarta POI中的“CellReference”类可以很容易地做到这一点。此外,转换可以以两种方式进行。
// Convert row and column numbers (0-based) to an Excel cell reference
CellReference numbers = new CellReference(3, 28);
System.out.println(numbers.formatAsString());
// Convert an Excel cell reference back into digits
CellReference reference = new CellReference("AC4");
System.out.println(reference.getRow() + ", " + reference.getCol());
我在VB中使用这个。NET 2003和它的工作良好…
Private Function GetExcelColumnName(ByVal aiColNumber As Integer) As String
Dim BaseValue As Integer = Convert.ToInt32(("A").Chars(0)) - 1
Dim lsReturn As String = String.Empty
If (aiColNumber > 26) Then
lsReturn = GetExcelColumnName(Convert.ToInt32((Format(aiColNumber / 26, "0.0").Split("."))(0)))
End If
GetExcelColumnName = lsReturn + Convert.ToChar(BaseValue + (aiColNumber Mod 26))
End Function
打印稿
function lengthToExcelColumn(len: number): string {
let dividend: number = len;
let columnName: string = '';
let modulo: number = 0;
while (dividend > 0) {
modulo = (dividend - 1) % 26;
columnName = String.fromCharCode(65 + modulo).toString() + columnName;
dividend = Math.floor((dividend - modulo) / 26);
}
return columnName;
}