如何基于多个选项过滤DataGridView？

Question

我有一个名为dgvAllBikes的gridView控件。在表单加载时，我加载dgvAllBikes。现在我想基于三个选项和一个搜索按钮过滤这个基于dgvAllBikes的gridView。

1）CC

2）模型

3）颜色

当我点击搜索按钮时，我想根据这三个选项过滤dgvAllBikes。

这是我的LoadGrid代码

 private DataTable LoadGrid()
    {

        using (SqlConnection con = new SqlConnection(CS))
        {
            SqlCommand cmd = new SqlCommand("spGetAllBikes", con);
            cmd.CommandType = CommandType.StoredProcedure;
            con.Open();
            SqlDataReader r = cmd.ExecuteReader();
            dtAllBike = new DataTable();

            dtAllBike.Load(r);

        }
        return dtAllBike;
    }

我已在班级

中声明了DataTable

string CS;
    protected DataTable dtAllBike;
    public SaleBike()
    {
        InitializeComponent();
        CS = ConfigurationManager.ConnectionStrings["BikeDB"].ConnectionString;
    }

这是图片

以下是btnSearch的代码。

private void btnSearch_Click(object sender, EventArgs e)
    {
        BindingSource bs = new BindingSource();
        bs.DataSource = dgvAllBikeDetails.DataSource;
        bs.Filter = dgvAllBikeDetails.Columns["CC"].HeaderText.ToString() + " LIKE '%" + tbCCSearch.Text + "%'";
        dgvAllBikeDetails.DataSource = bs;

它基于CC过滤但我无法绑定其他两个选项。非常感谢您的帮助。

Answer 1

使用OR或AND运算符创建适用于多个值的过滤器。

private void btnSearch_Click(object sender, EventArgs e)
{
    BindingSource bs = new BindingSource();
    bs.DataSource = dgvAllBikeDetails.DataSource;   

    string filter = "";

    // Check if text fields are not null before adding to filter. 
    if (!string.IsNullOrEmpty(tbCCSearch.Text)) 
    {
        filter += dgvAllBikeDetails.Columns["CC"].HeaderText.ToString() + " LIKE '%" + tbCCSearch.Text + "%' ";
    }
    if (!string.IsNullOrEmpty(tbModelSearch.Text)) 
    {
        if (filter.length > 0) filter += "OR ";
        filter += dgvAllBikeDetails.Columns["Model"].HeaderText.ToString() + " LIKE '%" + tbModelSearch.Text + "%' ";
    }
    if (!string.IsNullOrEmpty(tbCCSearch.Text)) 
    {
        if (filter.length > 0) filter += "OR ";
        filter += dgvAllBikeDetails.Columns["Color"].HeaderText.ToString() + " LIKE '%" + tbColorSearch.Text + "%' ";
    }

    bs.Filter = filter;
    dgvAllBikeDetails.DataSource = bs;
}