[英]How to save cell value in datagridview into a list<list<>>
我有一個問題,但我不知道如何解決。 我有一個像這張照片的datagridview
如您所見,有兩個(A-> 1,A-> 2,A-> 3)和(B-> 1,B-> 2,B-> 3)我想這樣保存到文本文件,我想這樣保存A {{4.5,4.2,4.3}; {1.2,1.5,1.8}}和B {{4.3,1.8,1.9},{2.2,2.3,4.5}},但我不知道如何使用datagridview C#winform解決它。 有誰能夠幫助我 ? 非常感謝。
這可能會有所幫助: 從.txt文件讀取,然后將數據導出到DataGridView
用於讀取文本文件。 但是為了節省,我相信您可以將其“反向”編碼:)
//Ok, this should work.
//First, represent the datagridview in a more readeable List
class My_row
{
public My_row(string Chemical, int Place, double Height)
{
this.Chemical = Chemical;
this.Place = Place;
this.Height = Height;
}
public string Chemical;
public int Place;
public double Height;
}
//then, the datagridview is this
List<My_row> rows = new List<My_row>;
foreach(var row in datagridview.rows)
{
My_row my_row = new My_row(
(string)row.Cells[0].value,
(int)row.Cells[1].value,
(double)row.Cells[2].value)
}
//with this you can loop the data easier plus you can use LINQ to order, filter and find the data in the datagridview
//Now, represent your final data structure
//In this case you have groups of 3 values of places 1, 2 and 3.
class Group
{
double value_1;
double value_2;
double value_3;
}
//this groups of 3 values are in a bigger group that is the chemical.
class Chemical
{
char name;
List<Group> groups;
}
//finally your file is going to be a list of chemical
List<chemical> chemical_list;
//now you have to fill that list, then loop through it to write the file.
char previous_chemical = rows[0].chemical;//initial chemical letter
Chemical chemical = new Chemical();
chemical.name = rows[0].chemical;//initial chemical letter
Group group = new Group();
foreach(My_row row in rows)
{
if(row.Chemical != previous_chemical)
{
previous_chemical = chemical.name;
chemical_list.Add(chemical);
chemical = new chemical();
chemical.name = row.Chemical;
}
if(row.Place == 1){ group.value_1 = row.Height; }
if(row.Place == 2){ group.value_2 = row.Height; }
if(row.Place == 3)
{
group.value_3 = row.Height;
chemical.Add(group);
group = new Group();
}
}
//That was he hard work. Now you have to loop the list (Chemicals, Groups and values) and write the file.
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