设置按钮在不同班级可见

Question

所以我有 5 个按钮可以将可见性设置为 false。但是我不能在设计师的课堂上做，我需要在这个课堂上做。我不确定我是否应该通过按钮或者是否有更好的方法？但这是数据网格加载的地方

    public static void CostSQL(string connstring, string passableQuery, IEdmVault7 vault, int ID, IEdmFolder5 Folder)
    {
        try
        {



            SqlConnection con = new SqlConnection(connstring);
            con.Open();

            //concat later to optimize code for universal use by passing variable quote
            SqlCommand cmd = new SqlCommand(passableQuery, con);
            DataTable rTbl = new DataTable();
            
            rTbl.Load(cmd.ExecuteReader());
            SQLResultSelector RSel = new SQLResultSelector(rTbl, vault, ID, "c", Folder);
            RSel.ShowDialog();
            



        }
        catch (Exception ex)
        {
            MessageBox.Show("Something happend during your connection to SQL error : " + ex.Message);


        }


    }

Answer 1

考虑一个事件，如果满足条件，则设置按钮的可见性。

一个概念性的例子，根据 if weekday 传递 true 或 false。

internal class SomeClass
{
    public delegate void OnCondition(bool condition);
    public static event OnCondition Condition;

    public static void CostSql()
    {
        Condition?.Invoke(DateTime.Now.DayOfWeek is not 
            (DayOfWeek.Sunday or DayOfWeek.Saturday));
    }
}

然后在表单中订阅事件，也许在表单加载中。

SomeClass.Condition += SomeClass_Condition;

事件中的代码，决定做什么...

private void SomeClass_Condition(bool condition)
{
    // here is where you set visibility of buttons
    if (condition)
    {
        
    }
    else
    {
        
    }
}

Answer 2

问题是这个班级已经被称为

RSel

所以当我用全名打电话时它会抛出错误。我将

clearbutton

方法放在设计器类中，然后使用

rsel.clearbutton();

正确调用它并且它有效

public static void CostSQL(string connstring, string passableQuery, IEdmVault7 vault, int ID, IEdmFolder5 Folder)
    {
        try
        {
            SqlConnection con = new SqlConnection(connstring);
            con.Open();

            //concat later to optimize code for universal use by passing variable quote
            SqlCommand cmd = new SqlCommand(passableQuery, con);
            DataTable rTbl = new DataTable();
            RSel.ClearButtons();
            rTbl.Load(cmd.ExecuteReader());
            SQLResultSelector RSel = new SQLResultSelector(rTbl, vault, ID, "c", Folder);

            RSel.ShowDialog();
            



        }
        catch (Exception ex)
        {
            MessageBox.Show("Something happend during your connection to SQL error : " + ex.Message);

        }
    }