如何绑定列表中的dataGridView？ [英] How to bind list to dataGridView?

问题描述

我似乎手忙脚乱，并一直在做这样的最后几个小时。

I seem to be running around in circles and have been doing so in the last hours.

我想从一个字符串数组填充一个DataGridView。我读过它不可能直接，那我需要创建一个包含字符串作为一个公共属性的自定义类型。于是我做了一个类：

I want to populate a datagridview from an array of strings. I've read its not possible directly, and that I need to create a custom type that holds the string as a public property. So I made a class:

public class FileName
    {
        private string _value;

        public FileName(string pValue)
        {
            _value = pValue;
        }

        public string Value
        {
            get 
            {
                return _value;
            }
            set { _value = value; }
        }
    }

这是在容器类，它只是具有与字符串的值的属性。所有我现在想要的是串出现在DataGridView，当我的数据源绑定到一个列表。

this is the container class, and it simply has a property with the value of the string. All I want now is that string to appear in the datagridview, when I bind its datasource to a List.

另外我有这种方法，BindGrid（），我想，以填补在DataGridView。在这里，它是：

Also I have this method, BindGrid() which I want to fill the datagridview with. Here it is:

    private void BindGrid()
    {
        gvFilesOnServer.AutoGenerateColumns = false;

        //create the column programatically
        DataGridViewTextBoxColumn colFileName = new DataGridViewTextBoxColumn();
        DataGridViewCell cell = new DataGridViewTextBoxCell();
        colFileName.CellTemplate = cell; colFileName.Name = "Value";
        colFileName.HeaderText = "File Name";
        colFileName.ValueType = typeof(FileName);

        //add the column to the datagridview
        gvFilesOnServer.Columns.Add(colFileName);

        //fill the string array
        string[] filelist = GetFileListOnWebServer();

        //try making a List<FileName> from that array
        List<FileName> filenamesList = new List<FileName>(filelist.Length);
        for (int i = 0; i < filelist.Length; i++)
        {
            filenamesList.Add(new FileName(filelist[i].ToString()));
        }

        //try making a bindingsource
        BindingSource bs = new BindingSource();
        bs.DataSource = typeof(FileName);
        foreach (FileName fn in filenamesList)
        {
            bs.Add(fn);
        }
        gvFilesOnServer.DataSource = bs;
    }

最后，问题：字符串数组填充好了，该列表中创建好了，但我得到了datagridview的一个空列。我也试过数据源=列表＆LT;>直接，而不是=的BindingSource，仍然没有

Finally, the problem: the string array fills ok, the list is created ok, but I get an empty column in the datagridview. I also tried datasource= list<> directly, instead of = bindingsource, still nothing.

我真的AP preciate的意见，这是推动我疯了。

I would really appreciate an advice, this has been driving me crazy.

感谢您

推荐答案

使用的BindingList 并设置<一个href="http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridviewcolumn.datapropertyname.aspx">DataPropertyName-Property之列。

Use a BindingList and set the DataPropertyName-Property of the column.

请尝试以下操作：

...
private void BindGrid()
{
    gvFilesOnServer.AutoGenerateColumns = false;

    //create the column programatically
    DataGridViewCell cell = new DataGridViewTextBoxCell();
    DataGridViewTextBoxColumn colFileName = new DataGridViewTextBoxColumn()
    {
        CellTemplate = cell, 
        Name = "Value",
        HeaderText = "File Name",
        DataPropertyName = "Value" // Tell the column which property of FileName it should use
     };

    gvFilesOnServer.Columns.Add(colFileName);

    var filelist = GetFileListOnWebServer().ToList();
    var filenamesList = new BindingList<FileName>(filelist); // <-- BindingList

    //Bind BindingList directly to the DataGrid, no need of BindingSource
    gvFilesOnServer.DataSource = filenamesList 
}

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