我有数据表显示不同时期不同城市的统计数据.它具有以下列名称

Period | city1,state | city2,state | city3,state
Jan        15              25          20 
Feb        5              26          29 
Mar        35              27          21 

我已经应用了一些逻辑,它给我列名称来对相应的列名进行排序,并使用前端的网格再次绑定数据.

现在,当我尝试使用以下代码进行排序时出现问题

griData.DefaultView.Sort = string.Format("{0} {1}", orderByField, sortDirection)

由于列名中的逗号,它将其视为两列并提供异常.示例：如果我按列city1排序,则按升序进行排序,然后排序表达式将为city1,state asc,并且在执行语句时,它会抛出一个异常,即city city1不存在而不是排序.谢谢

解决方法:

尝试以这种方式更改您的格式

griData.DefaultView.Sort = string.Format("[{0}] {1}", orderByField, sortDirection)

处理包含保留字符的列名的常用方法是将名称括在方括号中.

编辑我无法找到此案例的解决方法. (当然,拥有这种名称是一个糟糕的决定,但说实话,我确信方括号可以处理这个问题)

到目前为止,唯一可行的解​​决方法是以某种方式更改查询,为列名创建别名,然后可以对这些别名进行排序.像这样的东西

SELECT Period, 
      [city1,state] AS City1State, 
      [city2,state] AS City2State, 
      [city3,state] AS City3State
FROM yourTable

....

orderByField = "City1State"
sortDirection = "DESC"
griData.DefaultView.Sort = string.Format("{0} {1}", orderByField, sortDirection)

再次编辑你的问题确实引起了我的好奇心,所以我搜索了用于DataView的Sort属性的代码,并找到了一个看似内疚的内部方法.它将逗号分隔排序字符串,它完全忽略了字符串周围的任何方括号.所以,似乎没有办法使用该名称.

DataView的Sort属性的代码…..

internal unsafe IndexField[] ParseSortString(string sortString)
{
    string str;
    int num;
    int num2;
    string[] strArray;
    IndexField[] fieldArray;
    DataColumn column;
    bool flag;
    char[] chArray;
    fieldArray = zeroIndexField;
    if (sortString == null)
    {
        goto Label_011A;
    }
    if (0 >= sortString.Length)
    {
        goto Label_011A;
    }

    // Here the split on the comma char (0x2C) ignoring the fact that 
    // the whole sort expression is inside square brackets????

    strArray = sortString.Split(new char[] { 0x2c });
    fieldArray = new IndexField[(int) strArray.Length];
    num2 = 0;
    goto Label_0111;
Label_0041:
    str = strArray[num2].Trim();
    num = str.Length;
    flag = 0;
    if (num < 5)
    {
        goto Label_007D;
    }
    if (string.Compare(str, num - 4, " ASC", 0, 4, 5) != null)
    {
        goto Label_007D;
    }
    str = str.Substring(0, num - 4).Trim();
    goto Label_00A7;
Label_007D:
    if (num < 6)
    {
        goto Label_00A7;
    }
    if (string.Compare(str, num - 5, " DESC", 0, 5, 5) != null)
    {
        goto Label_00A7;
    }
    flag = 1;
    str = str.Substring(0, num - 5).Trim();
Label_00A7:
    if (str.StartsWith("[", 4) == null)
    {
        goto Label_00DE;
    }
    if (str.EndsWith("]", 4) == null)
    {
        goto Label_00D5;
    }
    str = str.Substring(1, str.Length - 2);
    goto Label_00DE;
Label_00D5:
    throw ExceptionBuilder.InvalidSortString(strArray[num2]);
Label_00DE:
    column = this.Columns[str];
    if (column != null)
    {
        goto Label_00F7;
    }
    throw ExceptionBuilder.ColumnOutOfRange(str);
Label_00F7:
    *(&(fieldArray[num2])) = new IndexField(column, flag);
    num2 += 1;
Label_0111:
    if (num2 < ((int) strArray.Length))
    {
        goto Label_0041;
    }
Label_011A:
    return fieldArray;
}