运行搜索整个 table

Question

我的程序运行，客户端输入他要查找的内容并在 SQL 数据库中搜索。当他点击搜索时，它出现在数据网格视图中。

我希望客户输入任何单词，单词的开头或结尾，而不是在一列中查找，而是在整个 table.

中查找

我该如何编程？

clsdatasource.search 获取文本框中的内容并将其存储在变量中。

DataView myview = new DataView(mytable);
myview.RowFilter = "CUSTOMER='" + clsDataSource.search + "'";
dataGridView1.DataSource = myview;

我尝试了什么：

for (int i = 0; i < myset.Tables[0].Columns.Count; i++) {
  DataRow[] MyDR = myset.Tables[0].Select(myset.Tables[0].Columns[i].ToString() + "='" +   clsDataSource.search + "'");
  if (MyDR.Length > 0) {
    dataGridView1.DataSource = myview;
  }
}

Answer 1

试试这个：

public partial class Form1 : Form
{
    DataGridView dataGridView;
    DataTable dataTable;
    DataView dataView;
    TextBox textBoxSearch;

    public Form1()
    {
        //InitializeComponent();

        Width = 400;
        dataGridView = new DataGridView { Parent = this, Dock = DockStyle.Top };
        textBoxSearch = new TextBox { Parent = this, Top = 200 };
        textBoxSearch.TextChanged += TextBoxSearch_TextChanged;

        dataTable = new DataTable();

        dataTable.Columns.Add("Id", typeof(int));
        dataTable.Columns.Add("Name", typeof(string));
        dataTable.Columns.Add("BirthDate", typeof(DateTime));

        dataTable.Rows.Add(1, "Bob", new DateTime(2001, 01, 01));
        dataTable.Rows.Add(2, "John", new DateTime(1999, 09, 09));
        dataTable.Rows.Add(3, "Alice", new DateTime(2002, 02, 02));

        dataView = new DataView(dataTable);
        dataGridView.DataSource = dataView;
    }

    private void TextBoxSearch_TextChanged(object sender, EventArgs e)
    {
        var text = textBoxSearch.Text;

        var values = dataTable.Columns
            .OfType<DataColumn>()
            .Select(c => "Convert([" + c.ColumnName + "], System.String)")
            .Select(c => c + " like '%" + text + "%'");

        var filter = string.Join(" or ", values);

        dataView.RowFilter = filter;
    }
}

为了在所有不同类型的列中进行搜索，我将它们转换为字符串。然后使用 like 运算符。最后，结合 or.

运行搜索整个 table

Run search in entire table

c#

sql

dataview

运行 搜索整个 table

Run search in entire table

c#

sql

dataview

运行搜索整个 table