哎,就没办法解决这个问题????(给自定义控件加默认数据源)
怎么给自定义的控件(比如一个gridview)默认绑定一个的dataset啊
在什么事件里写
我试了多少个了总显示 未将对像引用到对像实例
[解决办法]
Page_Load += BindDataSet()
[解决办法]
Page_Loaded += BindDataSet()
[解决办法]
你把自定义控件拖到窗体上后,选中该自定义控件,属性窗口里的事件列表有load事件,在load事件里绑定你要绑的数据源
[解决办法]
给算定义控制添加属性,然后在属性里给它数据源......这样也比较灵活....
[解决办法]
给自定义控制添加属性,然后在属性里给它数据源......这样也比较灵活....
[解决办法]
数据源也固定,我觉得有点不妥,怎么说,好像是死的了,不灵活多用,相当于只能你用,别人就不一定用得了,那你做这个怎么适合团队开发呢?
[解决办法]
UP,
[解决办法]
public partial class UserControl1 : UserControl{ public UserControl1() { InitializeComponent(); db(); } public void db() { DataTable dt = new DataTable(); DataColumn[] td = new DataColumn[4]; td[0] = new DataColumn("name", typeof(string)); td[1] = new DataColumn("age", typeof(Int32)); td[2] = new DataColumn("je", typeof(Int32)); td[3] = new DataColumn("dz", typeof(string)); dt.Columns.AddRange(td); DataRow tr = null; for (int i = 0; i < 3; i++) { tr = dt.NewRow(); tr[0] = "name"; tr[1] = 31; tr[2] = 20; tr[3] = "江西"; dt.Rows.Add(tr); tr = dt.NewRow(); tr[0] = "name"; tr[1] = 30; tr[2] = 20; tr[3] = "江西"; dt.Rows.Add(tr); tr = dt.NewRow(); tr[0] = "name1"; tr[1] = 20; tr[2] = 10; tr[3] = "浙江"; dt.Rows.Add(tr); tr = dt.NewRow(); tr[0] = "name1"; tr[1] = 21; tr[2] = 10; tr[3] = "浙江"; dt.Rows.Add(tr); tr = dt.NewRow(); tr[0] = "name2"; tr[1] = 10; tr[2] = 5; tr[3] = "湖北"; dt.Rows.Add(tr); } dataGridView1.DataSource = dt; } public object DataSource { get { return dataGridView1.DataSource; } set { dataGridView1.DataSource = value; } }}