绑定到DataGridView的字符串列表给出字符串属性 [英] Binding List of strings to a DataGridView gives strings properties

问题描述

我在StackOverflow中发现了一个类似的问题，但没有答案。我试图将一个 IList< string> 绑定到一个 DataGridView 作为它的 DataSource ，而不是输出字符串列表，例如在 ListView 中，它会输出列表中元素的属性，在这种情况下，长度。

我的代码：

  public void FindMatches（）
 {
 const string regex = @\ {（[a-zA-Z _] [a-zA-Z0-9 _] *） \} 
 IList< string> names =（从匹配匹配在Regex.Matches（ObterConteudoArquivo（），regex）select match.Value）.ToList（）; 
 _view.Lista =名称; 
} 
  

现在我有一个列表存储在 List ，其中包含所有匹配项，例如 {{CP}，{DP}，{EP}} 绑定到我的 DataGridView：

  public IList< string> Lista 
 {
 set 
 {
 ltvCampos.DataSource = value; 
} 
} 
  

这只绑定长度每个字符串。
我也做过：

  public IList< string> Lista 
 {
 set 
 {
 foreach（字符串名称）
 {
 DataGridTextBox row = new DataGridTextBox（）; 
 row.Text = name; 
 ltvCampos.Rows.Add（row）; 
} 
} 
} 
  

词法分析器说： p>

 调用带有params的方法。你打算调用更具体的方法'int Add（object）'？ 
  

解决方案

您需要 wrap 你的字符串在一个类中，它们将公开属性与setter和getter一起公开：

  class aString {public string theString {get;组; } 
 public aString（string s）{theString = s; }} 
  

现在创建一个字符串列表..

 列表< aString> theStrings = new List< aString>（）; 
  

..并填写您的比赛：

  theStrings =（来自Regex.Matches（text，regex）的匹配匹配
选择新的aString（match.Value））ToList（）; 
  

现在您可以将列表绑定到DGV：

  ltvCampos.DataSource = theStrings; 
  

对于添加的功能，您可能需要使用<$ c插入一层或两层以上的绑定$ c> BindingList （其中会引发更改事件）：

  var blist = new BindingList< ; aString>（theStrings）; 
 ltvCampos.DataSource = theStrings; 
  

或者一个 BindingList 和 BindingSource ，这将为您提供更广泛的选项和方法：

  var blist = new BindingList< aString>（theStrings）; 
 var source = new BindingSource（blist，null）; 
 ltvCampos.DataSource = source; 
  

I found one similar question in StackOverflow, but it has no answers. I'm trying to bind a IList<string> to a DataGridView as its DataSource, but instead of it output the list of strings, like in a ListView, it outputs me the properties of the elements in the list, in this case, Length.

My code:

public void FindMatches()
{
    const string regex = @"\{([a-zA-Z_][a-zA-Z0-9_]*)\}";
    IList<string> names = (from Match match in Regex.Matches(ObterConteudoArquivo(), regex) select match.Value).ToList();
    _view.Lista = names;
}

Now that I have a list stored in List that contains all my matches, example given { "{CP}", "{DP}", "{EP"} }, I want to bind them to my DataGridView:

public IList<string> Lista
{
    set
    {
        ltvCampos.DataSource = value;
    }
}

This binds only the Length of each string. I also did:

public IList<string> Lista
{
    set
    {
        foreach (string name in value)
        {
            DataGridTextBox row = new DataGridTextBox();
            row.Text = name;
            ltvCampos.Rows.Add(row);
        }
    }
}

The lexer says:

Method with 'params' is invoked. Have you intended to call more specific method 'int Add(object)'?

解决方案

You need to wrap your strings in a class, which exposes them as public properties with both a setter and a getter:

class aString { public string theString { get; set; } 
                public aString(string s) { theString = s; }  }

Now create a list of strings..

List<aString> theStrings = new List<aString>();

..and fill it with your Matches:

theStrings  = (from Match match in Regex.Matches(text, regex) 
               select new aString(match.Value)).ToList();

Now you can bind your list to the DGV:

ltvCampos.DataSource = theStrings;

For added functionality you may want to insert one or two more layers of binding by using a BindingList (which among others will raise change events):

var blist = new BindingList<aString>(theStrings);
ltvCampos.DataSource = theStrings;

or both a BindingList and a BindingSource, which will present you with a wider range of options and methods:

var blist = new BindingList<aString>(theStrings);
var source = new BindingSource(blist, null);
ltvCampos.DataSource = source ;

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