Question

我有Gridview完整的数据，我需要检查一些行时我可以按下按钮并相应地更改数据，我可以在检查所有行时执行此操作但我可以＆＃39 ;找到一种方法来连接我的查询与一行或多行的ID。

    protected void UsedForButton_Click(object sender, EventArgs e)
    {
        foreach (GridViewRow row in GridView1.Rows)
        {
            var chk = row.FindControl("InStockCbx") as CheckBox;
            if (chk.Checked)
            {
                //using (WorkDBEntities db = new WorkDBEntities())
                //{

                //    WorkTable table = new WorkTable();
                //    table.InStock = 0;

                //    db.WorkTables.Add(table);
                //    db.SaveChanges();    
                //}
                string query = "UPDATE WorkTable SET InStock = 0 WHERE Id = " ???;

                SqlCommand comm = new SqlCommand(query, conn);
                conn.Open();
                comm.ExecuteNonQuery();
                conn.Close();
            }

Answer 1

@Nemanja，您希望获得每条记录的ID，然后只有您可以根据Id进行更新。首先将记录的Id绑定到网格中，并尝试在按钮单击事件中获取id

Answer 2

试试这个：

protected void UsedForButton_Click(object sender, EventArgs e)
{
    foreach (GridViewRow row in GridView1.Rows)
    {
        CheckBox checkbox1 = (CheckBox)row.FindControl("InStockCbx");
        if (checkbox1.Checked)
        {
            int id = Convert.ToInt32(GridView1.DataKeys[row.RowIndex].Value.ToString());           
            SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["cn"].ConnectionString);
            SqlCommand cmd = new SqlCommand ("UPDATE WorkTable SET InStock = 0 WHERE Id = @Id"", con);
            cmd.CommandType = CommandType.Text;
            cmd.Parameters.Add("@Id", SqlDbType.Int).Value = id;
            con.Open();
            cmd.ExecuteNonQuery();
            con.Close();
            cmd.Dispose();
        }
    }
}

注意：您需要在.aspx模板中指定数据密钥，如下所示：

<asp:GridView ID="GridView1" runat="server" DataKeyNames="id" ...>

Gridview行ID

2 个答案: