如何通过搜索所有列来过滤datagridview

Question

private void textBox1_TextChanged(object sender, EventArgs e)
{
    BindingSource bs = new BindingSource();
    bs.DataSource = dataGridView1.DataSource;
    bs.Filter = "ColumnName like '%" + textBox1.Text + "%'";
    dataGridView1.DataSource = bs;
}

我不想指定列。如何在所有列中搜索数据？

Answer 1

对于示例，请尝试从文本框中连续找到四个值：

private void textBox1_TextChanged(object sender, EventArgs e)
{
    string Query = "";
    if (textBox1.Text != string.Empty)
        Query += "ColumnName like '%" + textBox1.Text.Trim() + "%' and ";
    if (textBox2.Text != string.Empty)
        Query += "ColumnName2 like '%" + textBox2.Text.Trim() + "%' and ";
    if (textBox3.Text != string.Empty)
        Query += "ColumnName3 like '%" + textBox3.Text.Trim() + "%' and ";
    if (textBox4.Text != string.Empty)
        Query += "ColumnName4 Like '%" + textBox4.Text.Trim() + "%' and ";
    Query += "1 = 1";
    (dataGridView1.DataSource as DataTable).DefaultView.RowFilter = Query;

}

或在所有列中找到它：

private void textBox1_TextChanged(object sender, EventArgs e)
{
    string Query = "";
    if (textBox1.Text != string.Empty)
        Query += "ColumnName like '%" + textBox1.Text.Trim() + "%' or ";
    if (textBox2.Text != string.Empty)
        Query += "ColumnName2 like '%" + textBox1.Text.Trim() + "%' or ";
    if (textBox3.Text != string.Empty)
        Query += "ColumnName3 like '%" + textBox1.Text.Trim() + "%' or ";
    if (textBox4.Text != string.Empty)
        Query += "ColumnName4 Like '%" + textBox1.Text.Trim() + "%' or ";
    Query += "1 = 1";
    (dataGridView1.DataSource as DataTable).DefaultView.RowFilter = Query;

}