DataGridView1 中的数据如何进行筛选呢.

[lucifercxw]

希望在textbox 中输入文本.然后点击筛选按钮之后,,在DataGridView1 中显示含有textbox 框中的信息的行.
这个如何实现呢.

[啥都不懂所以不当程序猿]

重新访问数据库根据文本类型得到相关行，然后再绑定在datagridview里

[github_36000833]

如果是数据绑定，可以筛选数据，比如：

using System.Data;
using System.Drawing;
using System.Windows.Forms;

namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            // InitializeComponent();
            this.Controls.Add(dataGridView1);
            this.Controls.Add(textBox1);

            this.bindingSource.DataSource =  PopulateSampleData();
            this.dataGridView1.DataSource = bindingSource;
            this.textBox1.TextChanged += delegate
            {
                bindingSource.Filter = $"名字 LIKE '%{this.textBox1.Text}%'";
            };
            this.textBox1.Text = "三";
        }

        DataTable PopulateSampleData()
        {
            var dataTable = new DataTable();
            dataTable.Columns.Add("编号", typeof(int));
            dataTable.Columns.Add("名字", typeof(string));
            dataTable.Rows.Add(3, "张三");
            dataTable.Rows.Add(4, "李四");
            dataTable.Rows.Add(5, "王五");
            dataTable.Rows.Add(6, "马六");
            dataTable.Rows.Add(7, "冯七");
            dataTable.Rows.Add(8, "三四五六七八");
            return dataTable;
        }

        TextBox textBox1 = new TextBox() { Dock = DockStyle.Top, BackColor = Color.PeachPuff};
        DataGridView dataGridView1 = new DataGridView() { Dock = DockStyle.Fill};
        BindingSource bindingSource = new BindingSource();
    }
}