是否可以在TextBox中将DataTable作为AutoCompleteSource？(C#)

Question

是否可以在TextBox中将DataTable作为AutoCompleteSource？(C#)

Answer 1

不直接，您需要将数据表读入AutoCompleteStringCollection.

你可以做这样的事情（从这里）：

private AutoCompleteStringCollection GetAutoSourceCollectionFromTable(DataTable table)
{
    AutoCompleteStringCollection autoSourceCollection = new AutoCompleteStringCollection();

    foreach (DataRow row in table.Rows)
    {
        autoSourceCollection.Add(row[0]); //assuming required data is in first column
    }

    return autoSourceCollection;
}

Answer 2

Jared是正确的 - 如果不做一些操作就不能直接绑定.以下是使用LINQ DataSet扩展来检索字段作为自动完成源的示例:

DataTable dtPosts = new DataTable();
using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["StackOverflow"].ConnectionString))
{
    conn.Open();
    using (SqlDataAdapter adapt = new SqlDataAdapter("SELECT TOP 100 Id, Title, Body, CreationDate FROM Posts WHERE Title IS NOT NULL ORDER BY Id", conn))
    {
        adapt.SelectCommand.CommandTimeout = 120;
        adapt.Fill(dtPosts);
    }
}

//use LINQ method syntax to pull the Title field from a DT into a string array...
string[] postSource = dtPosts
                    .AsEnumerable()
                    .Select<System.Data.DataRow, String>(x => x.Field<String>("Title"))
                    .ToArray();

var source = new AutoCompleteStringCollection();
source.AddRange(postSource);
textBox1.AutoCompleteCustomSource = source;
textBox1.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
textBox1.AutoCompleteSource = AutoCompleteSource.CustomSource;