日期:2014-05-17  浏览次数:21277 次

Microsoft JScript 运行时错误: Sys.ParameterCountException: 参数计数不匹配。
使用后台生成按钮并添加按钮点击事件,运行时,多次点击按钮报错,报错的页面是系统的ScriptResource.axd?………………(一长串),提示内容如标题“Microsoft JScript 运行时错误: Sys.ParameterCountException: 参数计数不匹配。”
报错的页面系统自带函数:
Function.emptyFunction = Function.emptyMethod = function Function$emptyMethod() {
  /// <summary locid="M:J#Function.emptyMethod" />
  if (arguments.length !== 0) throw Error.parameterCount();
}

生成按钮后添加
  btn.Click += new System.EventHandler(this.NewBtnClick);
Click事件响应的函数:
  protected void NewBtnClick(object sender, EventArgs e) 
  {
  Button xBtn = (Button)sender;
  xBtn.CssClass = "downbtcss";
  OleDbConnection conn = null;
  string sql = "Select ID FROM 点标注 Where 简称= '" + xBtn.Text + "'";
  string accessDbPath = String.Empty;
  accessDbPath = HttpContext.Current.Server.MapPath("~/App_Data/数据表.mdb");
  conn = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + accessDbPath);
  OleDbCommand cmd = new OleDbCommand(sql, conn);
  OleDbDataReader reader=null;
  try
  {
  if (conn.State == ConnectionState.Closed)
  {
  conn.Open();
  }
  reader = cmd.ExecuteReader();
  string tmp = "";
  while (reader.Read())
  {
  tmp = reader[0].ToString();
  }
  ScriptManager.RegisterStartupScript(this, this.GetType(), "", "bianhao12('" + tmp + "');", true);
  }
  catch (Exception ex)
  {
  Response.Write(ex);
  }
  finally
  {
  reader.Close();
  conn.Close();
  }
  } 

现在的问题是我找不到问题的根源在哪里。求助!!!

------解决方案--------------------
你使用的是UpdatePanel?
------解决方案--------------------
try
{
if (conn.State == ConnectionState.Closed)
{
conn.Open();
}
reader = cmd.ExecuteReader();
string tmp = "";
while (reader.Read())
{
tmp = reader[0].ToString();
}
=>
try
{
if (conn.State != ConnectionState.Open)
{
conn.Open();
}
reader = cmd.ExecuteReader();
string tmp = "";
if (reader.Read())
{
tmp = reader[0].ToString();
}

------解决方案--------------------
探讨

try
{
if (conn.State == ConnectionState.Closed)
{
conn.Open();
}
reader = cmd.ExecuteReader();
string tmp = "";
while (reader.Read())
{
tmp = reader[0].ToString();
}
……

------解决方案--------------------
你在 NewBtnClick 中 加断点跟一下,看看 实际错误是什么
------解决方案--------------------
问题可能在你的 NewBtnClick 方法中
------解决方案--------------------
错误不是每次都出现?

Response.Write(ex);
=>
ScriptManager.RegisterStartupScript(this, this.GetType(), "error", "alert('"+ex.Message+"');", true);

------解决方案--------------------
你最好找下错误的规律