Using a list as a data source for DataGridView

Question

I ve extracted the setting names and their respective values out of a configuration file into an ordered dictionary  The dictionary contains keys and values which are of the ICollection class  I want to bind that data and display it in a DataGridView  I ve tried copying the strings to arrays and displaying those arrays  but when I ran the program the columns were blank and it did not seem to be binded at all   I ve also attempted to set the DataGridView source directly to one the ordered dictionary collections  keys or values   but that also did not result in anything I wanted  the columns were still blank  However  a third column is made with the column name as  length  and displays the lengths of the entries in the ICollection  But needless to say I do not want the lengths  I want the entries themselves   Here is the code that I am using for this question  Upon the loading of the form  I load the configuration file and a private member called m Settings has all the key-value pairs  Then I create a list and add the keys and the values separately  After setting the binding source to  data   I run the program and both columns I added are both blank        private void Form4 Load object sender  EventArgs e                loadconfigfile Properties Settings Default Config           List lt Object gt  data   new List lt Object gt             data Add m Settings Keys           data Add m Settings Values           bindingSource1 DataSource   data          dataGridView1 DataSource   bindingSource1          dataGridView1 Refresh            Any ideas as to how I could get the ordered dictionary and display the entries in two columns labelled  Settings  and  Values   I believe that lists were compatible DataSources for DataGridViews  but now I m starting to second-guess myself   Any help or direction is greatly appreciated  I ll be happy to provide more information if needed   Thanks   EDIT   Here is the revised code with the implemented myStruct class       List lt myStruct gt  list   new List lt myStruct gt         for int index   0  index  lt  m Settings Count  index                  myStruct pair   new myStruct keys index   values index  ToString             list Add pair              public class myStruct               private string Key   get  set            private string Value   get  set             public myStruct string key  string value                        Key   key              Value   value                    However  when I set the binding DataDource to list  nothing appears on the DataGridView  it s simply empty  Anyone know why

User · Answer

Set the DataGridView property      gridView1 AutoGenerateColumns   true    And make sure the list of objects your are binding  those object properties should be public

User · Answer

this Func may help you   it add every list object to grid view    private void show data                         BindingSource Source   new BindingSource                 for  int i   0  i  lt  CC Contects Count  i                                  Source Add CC Contects ElementAt i                                 Data View DataSource   Source               I write this for simple database app

User · Answer

First  I don t understand why you are adding all the keys and values count times  Index is never used   I tried this example            var source   new BindingSource            List lt MyStruct gt  list   new List lt MyStruct gt    new MyStruct  fff    b     new MyStruct  c   d              source DataSource   list          grid DataSource   source    and that work pretty well  I get two columns with the correct names  MyStruct type exposes properties that the binding mechanism can use       class MyStruct          public string Name   get  set        public string Adres   get  set          public MyStruct string name  string adress                Name   name          Adres   adress              Try to build a type that takes one key and value  and add it one by one  Hope this helps

[c#] Using a list as a data source for DataGridView

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