我试图在linkbutton点击事件上触发radiobutton检查已更改的事件，但它转到页面加载并且radiobutton checkedchanged事件不会触发。
protected void Page_Load(object sender, EventArgs e)
{
string Query = "select Q101004,Q101005 from Q101 where Q101001<110000013";
DataTable dt = ExecuteDataset(Query).Tables[0];
ViewState["dt"] = dt;
Table t = new Table();
TableRow r = new TableRow();
t.Rows.Add(r);
TableCell c = new TableCell();
lnkbtn = new LinkButton();
r.Cells.Add(c);
lnkbtn.Text = "Click Here";
lnkbtn.Visible = true;
lnkbtn.CommandName = "Test";
lnkbtn.CommandArgument = "Hi";
lnkbtn.ID = "Hi";
PlaceHolder2.Controls.Add(lnkbtn);
for (int i = 0; i < dt.Rows.Count; i++)
{
rb = new RadioButton();
rb.AutoPostBack = true;
rb.ID = "m" +i;
rb.GroupName = "a";
rb.Text = dt.Rows[0][0].ToString();
CbxList = new CheckBoxList();
CbxList.ID = "Cbx"+i;
CbxList.Enabled = false;
CbxList.RepeatDirection = RepeatDirection.Horizontal;
CbxList.RepeatColumns = 2;
CbxList.CellPadding = 10;
CbxList.CellSpacing = 5;
CbxList.RepeatLayout = RepeatLayout.Table;
options = dt.Rows[0][1].ToString().Split('~');
PlaceHolder2.Controls.Add(new LiteralControl("<br/>"));
for (int j = 0; j < options.Length; j++)
{
CbxList.Items.Add(new ListItem(options[j], options[j]));
}
PlaceHolder2.Controls.Add(rb);
PlaceHolder2.Controls.Add(CbxList);
if (i ==0)
rb.CheckedChanged += new EventHandler(rb_CheckedChanged);
else
lnkbtn.Click += new EventHandler(lnkbtn_Click);
}
}
void lnkbtn_Click(object sender, EventArgs e)
{
DataTable dt = (DataTable)ViewState["dt"];
lnkbtn = (LinkButton)PlaceHolder2.FindControl("Hi");
string str=((LinkButton)sender).CommandArgument;
//lnkbtn.Enabled = true;
if (lnkbtn.ID == str)
{
rb = new RadioButton();
rb.AutoPostBack = true;
rb.ID = "m";
rb.GroupName = "a";
rb.Text = dt.Rows[0][0].ToString();
CbxList = new CheckBoxList();
CbxList.ID = "Cbx";
CbxList.Enabled = false;
CbxList.RepeatDirection = RepeatDirection.Horizontal;
CbxList.RepeatColumns = 2;
CbxList.CellPadding = 10;
CbxList.CellSpacing = 5;
CbxList.RepeatLayout = RepeatLayout.Table;
options = dt.Rows[0][1].ToString().Split('~');
PlaceHolder2.Controls.Add(new LiteralControl("<br/>"));
for (int i = 0; i < options.Length; i++)
{
CbxList.Items.Add(new ListItem(options[i], options[i]));
}
PlaceHolder2.Controls.Add(rb);
PlaceHolder2.Controls.Add(CbxList);
if (lnkbtn.CommandName == "Test")
{
rb.CheckedChanged += new EventHandler(rb_CheckedChanged);
}
}
}
答案 0 :(得分：1)
您的代码订阅已更改的已检查但未调用它 如果你想这样做，你可以直接调用rb_CheckedChanged（）方法。
答案 1 :(得分：0)
您需要阅读ASP.NET页面生命周期 - http://msdn.microsoft.com/en-us/library/ms178472(VS.100).aspx
非常粗略地说，在页面生命周期中会调用以下事件。
您遇到的问题是您正在创建控件并将其连接到第4步中动态触发，这在页面生命周期中为时已晚。
在下一次往返中，如果有人与该控件进行交互，并且生命周期重新开始，则在页面准备执行命令时该控件将不存在。
您需要将创建的RadioButton移动到页面创建的更早阶段。在更新的代码中，请尝试将Page_Load代码移到override oninit方法中。
答案 2 :(得分：0)
希望这有助于......它对我来说很好。 只需使用此代码修改代码，您就可以实现所需的输出
private void InitPage()
{
string a1, b,a2,b2;
_objSession = (ClsSession)Session["Login"];
ds = _objSession._DataSet;
dtAll = ds.Tables[3];
dr = dtAll.NewRow();
string str2 = (string)ViewState["str1"];
if (str2 != null)
{
string[] str3 = str2.Split('~');
a2 = str3[0];
b2 = str3[1];
}
else
{
a2 = "a0";
b2 = "b0";
}
str = (string)ViewState["str"];
if (str == null)
{
a1 = "a0";
b = "b";
}
else
{
string[] str1 = str.Split('~');
a1 = str1[0];
b = str1[1];
}
if (str==null)
{
for (int j = 0; j < dtAll.Rows.Count; j++)
{
Table t = new Table();
TableRow r = new TableRow();
t.Rows.Add(r);
TableCell c = new TableCell();
lnkbtn = new LinkButton();
r.Cells.Add(c);
lnkbtn.Text = (j + 1).ToString();
lnkbtn.Visible = true;
lnkbtn.CommandName = "Test";
lnkbtn.CommandArgument = "Hi" + j;
lnkbtn.ID = "Hi" + j;
lnkbtn.ForeColor = Color.Blue;
lnkbtn.Width = 30;
lnkbtn.Font.Bold = true;
lnkbtn.Font.Size = 14;
lnkbtn.Font.Underline = false;
lnkbtn.Click += new EventHandler(lnkbtn_Click);
c.Controls.Add(lnkbtn);
plcHdrLinkButton.Controls.Add(lnkbtn);
}
ViewState["a"] = 0;
}
if (str2 != null)
{
string[] str3 = str2.Split('~');
a2 = str3[0];
a1 = a2;
}
string resultString = Regex.Match(a1, @"\d+").Value;
int a = int.Parse(resultString);
ViewState["a"] = a;
plcHdrQuestion.Controls.Clear();
rb = new RadioButton();
rb.ID = "m" + a;
rb.AutoPostBack = true;
rb.GroupName = "a";
rb.Text = (a + 1) + "." + " " + dtAll.Rows[a][4].ToString();
CbxList = new CheckBoxList();
CbxList.ID = "Cbx" + a;
CbxList.Enabled = false;
CbxList.RepeatDirection = RepeatDirection.Horizontal;
CbxList.RepeatColumns = 2;
CbxList.CellPadding = 10;
CbxList.CellSpacing = 5;
CbxList.RepeatLayout = RepeatLayout.Table;
options = dtAll.Rows[a][5].ToString().Split('~');
plcHdrQuestion.Controls.Add(new LiteralControl("<br/>"));
for (int i = 0; i < options.Length; i++)
{
CbxList.Items.Add(new ListItem(options[i], options[i]));
}
plcHdrQuestion.Controls.Add(rb);
plcHdrQuestion.Controls.Add(CbxList);
rb.CheckedChanged += new EventHandler(lnkbtn_Click);
string st = (string)ViewState["str"];
ViewState["str1"] = st;
ViewState["str"] = null;
}
protected void lnkbtn_Click(object sender, EventArgs e)
{
Boolean _flag=true;
ds = _objSession._DataSet;
dt1 = ds.Tables[3];
dr = dt1.NewRow();
StringBuilder sb=new StringBuilder ();
for (int i = 0; i < dt1.Rows.Count; i++)
{
Cbx = (RadioButton)plcHdrQuestion.FindControl("m" + i);
Cbx1 = (CheckBoxList)plcHdrQuestion.FindControl("Cbx" + i);
if (Cbx != null)
{
if (Cbx.Checked == true)
{
Cbx1.Enabled = true;
_flag = false;
string st1 = (string)ViewState["st"];
string st="c";
if (st1 != null)
st = st1 + "~" + st;
ViewState["st"] = st;
st1 = (string)ViewState["st"];
sb.Append(st);
}
break;
}
}
int count=(sb.ToString().Count());
if (count>2)
{
_flag = true;
}
if ((lnkbtn.CommandName == "Test") && (_flag ==true))
{
for (int j = 0; j < dt1.Rows.Count; j++)
{
lnkbtn = (LinkButton)plcHdrLinkButton.FindControl("Hi" + j);
string str = ((LinkButton)sender).CommandArgument;
lnkbtn.Enabled = true;
if (lnkbtn.ID == str)
{
ViewState["str"] = str + "~" + lnkbtn.ID;
InitPage();
ViewState["st"] = null;
_flag = false;
break;
}
}
}
}