C# 对列表进行排序<&燃气轮机；在C中使用linq#
我想在Datagridview ColumnHeaderMouseClick下进行“排序”。 Accending或Decenting应该是自动的，selected column value automatic 我浏览了很多网站，尝试了一些选择，但我无法实现我的目标C# 对列表进行排序<&燃气轮机；在C中使用linq#,c#,linq,sorting,datagridview,C#,Linq,Sorting,Datagridview,我想在Datagridview ColumnHeaderMouseClick下进行“排序”。 Accending或Decenting应该是自动的，selected column value automatic 我浏览了很多网站，尝试了一些选择，但我无法实现我的目标 private void lst_Install_Item_Main_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e) { try
private void lst_Install_Item_Main_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
try
{
DataGridViewColumn newColumn = lst_Install_Item_Main.Columns[e.ColumnIndex];
List<test> temp = (List<test>)lst_Install_Item_Main.DataSource;
//var newList = temp.OrderBy(m => m.feet).ToList();
//var newList = temp.AsQueryable().OrderBy(m => m.feet).ToList();
temp.Sort((m1, m2) => m1.feet.CompareTo(m2.feet));
lst_Install_Item_Main.DataSource = temp;
lst_Install_Item_Main.Refresh();
}
catch (Exception ex)
{
MessageBox.Show("There was an error bringing sorting \n" + ex.Message, "Testing", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void lst\u Install\u Item\u Main\u ColumnHeaderMouseClick（对象发送器，DataGridViewCellMouseEventArgs e）
{
尝试
{
DataGridViewColumn newColumn=lst_Install_Item_Main.Columns[e.ColumnIndex]；
List temp=（List）lst_Install_Item_Main.DataSource；
//var newList=temp.OrderBy（m=>m.feet.ToList（）；
//var newList=temp.AsQueryable（）.OrderBy（m=>m.feet.ToList（）；
温度排序（（m1，m2）=>m1.英尺比（m2.英尺））；
lst_Install_Item_Main.DataSource=temp；
lst_Install_Item_Main.Refresh（）；
}
捕获（例外情况除外）
{
MessageBox.Show（“带来排序时出错\n”+例如Message，“Testing”，MessageBoxButtons.OK，MessageBoxIcon.error）；
}
}
非常感谢你的建议和帮助 您必须将字符串转换为整数值，因为字符串的顺序不同（按字典顺序，
102，如果按降序排列。则需要将
英尺的值作为整数排序。为此，首先需要删除feet符号（”
），然后将该值解析为int
（暂时，该值仍存储为字符串）
这应该可以做到：
temp.Sort((m1, m2) => int.Parse(m1.feet.Replace("'", "")).CompareTo(int.Parse(m2.feet.Replace("'", ""))));
另外，我建议您不要将脚符号存储在值中，而是在网格中显示值时使用某种格式将其包括在内。这样，每次需要使用值时，您都可以避免此类转换和比较。如果没有负值，则要按需要排序，您需要将值解析为数字或简单地填充它们：
temp.Sort((m1, m2) => m1.feet.PadLeft(2).CompareTo(m2.feet.PadLeft(2)));
当比较字符串“1”
、“5”
和“10”
时，这将比较“1”
、“5”
和“10”
（注意空格，小于0
字符），使它们按正确的顺序排序
确保选择的数字足够大，可以覆盖最长的数字。更新了问题3，增加了排序顺序的触发器
我建议您以这种方式使用iParer
public class TestComparer : IComparer<test>
{
bool isAscending;
public TestComparer(bool isAscendingOrder)
{
isAscending = isAscendingOrder;
}
int IComparer<test>.Compare(test a, test b)
{
int c1 = IntFromStr(a.feet);
int c2 = IntFromStr(b.feet);
int res;
res = (c1 > c2) ? 1 : (c1 < c2) ? -1 : 0;
return isAscending ? res : -res;
}
int IntFromStr(string s)
{
int result;
return (int.TryParse(s.Replace("'", ""), out result)) ? result : int.MaxValue;
}
}
公共类TestComparer:IComparer
{
布尔伊萨丁；
公共测试比较程序（bool isAscendingOrder）
{
isAscending=isAscendingOrder；
}
int IComparer.Compare（测试a、测试b）
{
int c1=IntFromStr（a.英尺）；
int c2=IntFromStr（b.英尺）；
国际关系；
res=（c1>c2）？1：（c1
此比较器将把无效项移到已排序列表的末尾，您也可以轻松地更改排序行为，您可以像下面这样调用它
List < test > lst = new List<test>();
// It will be your property to Trigger value each time you click
// (sortOrderTrigger = !sortOrderTrigger)
bool sortOrderTrigger = true;
lst.Add(new test { feet = "1'" });
lst.Add(new test { feet = "21'" });
lst.Add(new test { feet = "123'" });
lst.Add(new test { feet = "5'" });
lst.Add(new test { feet = "10'" });
lst.Add(new test { feet = "15'" });
lst.Add(new test { feet = "jj'" });
lst.Add(new test { feet = "ff'" });
lst.Sort(new TestComparer(sortOrderTrigger));
Listlst=newlist（）；
//每次单击时触发值将是您的属性
//（sortOrderTrigger=！sortOrderTrigger）
bool sortOrderTrigger=true；
lst.Add（新测试{feet=“1'”}）；
添加（新测试{feet=“21'”}）；
lst.Add（新测试{feet=“123'”}）；
添加（新测试{feet=“5'”}）；
添加（新测试{feet=“10'”}）；
添加（新测试{feet=“15'”}）；
lst.Add（新测试{feet=“jj'”}）；
lst.Add（新测试{feet=“ff'”}）；
lst.Sort（新的TestComparer（sortOrderTrigger））；
感谢您的帮助和指导。
我已将我的要求固定如下，希望这对像我这样的人有所帮助：）
1。创建的列表包含与columns dataproperty相同的列。
public class sortList
{
public string Layer { get; set; }
public string mlenth { get; set; }
public string diameter { get; set; }
public string subtypecd { get; set; }
public string coatingtype { get; set; }
public string year { get; set; }
public string gisid { get; set; }
public string taxdistrict { get; set; }
public string lengthsource { get; set; }
public string shapelen { get; set; }
public string feet { get; set; }
public sortList()
{
this.Layer = ListSortDirection.Ascending.ToString();
this.mlenth = ListSortDirection.Ascending.ToString();
this.feet = ListSortDirection.Ascending.ToString();
this.diameter = ListSortDirection.Ascending.ToString();
this.subtypecd = ListSortDirection.Ascending.ToString();
this.coatingtype = ListSortDirection.Ascending.ToString();
this.year = ListSortDirection.Ascending.ToString();
this.gisid = ListSortDirection.Ascending.ToString();
this.taxdistrict = ListSortDirection.Ascending.ToString();
this.lengthsource = ListSortDirection.Ascending.ToString();
this.shapelen = ListSortDirection.Ascending.ToString();
}
}
2。ColumnHeaderMouseClick事件和订单函数上的书面代码
private void lst_Install_Item_Main_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
try
{
//Get Column which clicked
DataGridViewColumn newColumn = lst_Install_Item_Main.Columns[e.ColumnIndex];
//Get Values from DataGrid
List<test> temp = (List<test>)lst_Install_Item_Main.DataSource;
//Get the sorting order for that column
string orderby = GetOrder(newColumn.DataPropertyName);
if (orderby == ListSortDirection.Ascending.ToString()) //Ascending
{
if (newColumn.DataPropertyName == "feet") //Feet column sort with double value and required trim
{
temp = temp.OrderBy(x => Convert.ToDouble(x.feet.Trim('\''))).ToList();
}
else if (newColumn.DataPropertyName == "shapelen") //Shapelen column sort with double value and required trim
{
temp = temp.OrderBy(x => Convert.ToDouble(x.shapelen.Trim('\''))).ToList();
}
else ///other columns having string value only.
{
temp = temp.OrderBy(x => x.GetType().GetProperty(newColumn.DataPropertyName).GetValue(x, null)).ToList();
}
}
else // Descending
{
if (newColumn.DataPropertyName == "feet") //Feet column sort with double value and required trim
{
temp = temp.OrderByDescending(x => Convert.ToDouble(x.feet.Trim('\''))).ToList();
}
else if (newColumn.DataPropertyName == "shapelen") //Shapelen column sort with double value and required trim
{
temp = temp.OrderByDescending(x => Convert.ToDouble(x.shapelen.Trim('\''))).ToList();
}
else //other columns having string value only.
{
temp = temp.OrderByDescending(y => y.GetType().GetProperty(newColumn.DataPropertyName).GetValue(y, null)).ToList();
}
}
lst_Install_Item_Main.DataSource = temp;
lst_Install_Item_Main.Refresh();
}
catch (Exception ex)
{
MessageBox.Show("There was an error while sorting \n" + ex.Message, "Closeout Calculator", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private string GetOrder(string columnName)
{
//Store the each coulmn(Ascending/Descending) values to make it dynamic
string ord = sortOrder[0].GetType().GetProperty(columnName).GetValue(sortOrder[0], null).ToString();
if (ord == ListSortDirection.Ascending.ToString())
{
sortOrder[0].GetType().GetProperty(columnName).SetValue(sortOrder[0], ListSortDirection.Descending.ToString(), null);
}
else
{ sortOrder[0].GetType().GetProperty(columnName).SetValue(sortOrder[0], ListSortDirection.Ascending.ToString(), null); }
return ord;
}
private void lst\u Install\u Item\u Main\u ColumnHeaderMouseClick（对象发送器，DataGridViewCellMouseEventArgs e）
{
尝试
{
//获取单击的列
DataGridViewColumn newColumn=lst_Install_Item_Main.Columns[e.ColumnIndex]；
//从DataGrid获取值
List temp=（List）lst_Install_Item_Main.DataSource；
//获取该列的排序顺序
字符串orderby=GetOrder（newColumn.DataPropertyName）；
if（orderby==ListSortDirection.Ascending.ToString（））//Ascending
{
if（newColumn.DataPropertyName==“feets”）//feets列使用双精度值和所需修剪进行排序
{
temp=temp.OrderBy（x=>Convert.ToDouble（x.feet.Trim（'\''））.ToList（）；
}
else if（newColumn.DataPropertyName==“shapelen”）//shapelen列排序具有双值和所需修剪
{
temp=temp.OrderBy（x=>Convert.ToDouble（x.shapelen.Trim（'\''））.ToList（）；
}
else///仅具有字符串值的其他列
public class sortList
{
public string Layer { get; set; }
public string mlenth { get; set; }
public string diameter { get; set; }
public string subtypecd { get; set; }
public string coatingtype { get; set; }
public string year { get; set; }
public string gisid { get; set; }
public string taxdistrict { get; set; }
public string lengthsource { get; set; }
public string shapelen { get; set; }
public string feet { get; set; }
public sortList()
{
this.Layer = ListSortDirection.Ascending.ToString();
this.mlenth = ListSortDirection.Ascending.ToString();
this.feet = ListSortDirection.Ascending.ToString();
this.diameter = ListSortDirection.Ascending.ToString();
this.subtypecd = ListSortDirection.Ascending.ToString();
this.coatingtype = ListSortDirection.Ascending.ToString();
this.year = ListSortDirection.Ascending.ToString();
this.gisid = ListSortDirection.Ascending.ToString();
this.taxdistrict = ListSortDirection.Ascending.ToString();
this.lengthsource = ListSortDirection.Ascending.ToString();
this.shapelen = ListSortDirection.Ascending.ToString();
}
}
private void lst_Install_Item_Main_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
try
{
//Get Column which clicked
DataGridViewColumn newColumn = lst_Install_Item_Main.Columns[e.ColumnIndex];
//Get Values from DataGrid
List<test> temp = (List<test>)lst_Install_Item_Main.DataSource;
//Get the sorting order for that column
string orderby = GetOrder(newColumn.DataPropertyName);
if (orderby == ListSortDirection.Ascending.ToString()) //Ascending
{
if (newColumn.DataPropertyName == "feet") //Feet column sort with double value and required trim
{
temp = temp.OrderBy(x => Convert.ToDouble(x.feet.Trim('\''))).ToList();
}
else if (newColumn.DataPropertyName == "shapelen") //Shapelen column sort with double value and required trim
{
temp = temp.OrderBy(x => Convert.ToDouble(x.shapelen.Trim('\''))).ToList();
}
else ///other columns having string value only.
{
temp = temp.OrderBy(x => x.GetType().GetProperty(newColumn.DataPropertyName).GetValue(x, null)).ToList();
}
}
else // Descending
{
if (newColumn.DataPropertyName == "feet") //Feet column sort with double value and required trim
{
temp = temp.OrderByDescending(x => Convert.ToDouble(x.feet.Trim('\''))).ToList();
}
else if (newColumn.DataPropertyName == "shapelen") //Shapelen column sort with double value and required trim
{
temp = temp.OrderByDescending(x => Convert.ToDouble(x.shapelen.Trim('\''))).ToList();
}
else //other columns having string value only.
{
temp = temp.OrderByDescending(y => y.GetType().GetProperty(newColumn.DataPropertyName).GetValue(y, null)).ToList();
}
}
lst_Install_Item_Main.DataSource = temp;
lst_Install_Item_Main.Refresh();
}
catch (Exception ex)
{
MessageBox.Show("There was an error while sorting \n" + ex.Message, "Closeout Calculator", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private string GetOrder(string columnName)
{
//Store the each coulmn(Ascending/Descending) values to make it dynamic
string ord = sortOrder[0].GetType().GetProperty(columnName).GetValue(sortOrder[0], null).ToString();
if (ord == ListSortDirection.Ascending.ToString())
{
sortOrder[0].GetType().GetProperty(columnName).SetValue(sortOrder[0], ListSortDirection.Descending.ToString(), null);
}
else
{ sortOrder[0].GetType().GetProperty(columnName).SetValue(sortOrder[0], ListSortDirection.Ascending.ToString(), null); }
return ord;
}
Private List<sortList> sortOrder = new List<sortList>();
sortOrder.Add(new sortList());