在C＃后面的代码中调用javascript函数不起作用

代码如下



提交按钮代码如下

Code as follows

Submit button code as follows

string slip_No = string.Empty;
            foreach (GridViewRow row in grdRpt.Rows)
                        {
            CheckBox cb = (CheckBox)row.FindControl("chkselecdata");
                            if (cb.Checked == true)
                            {
           int key = Convert.ToInt32(grdRpt.DataKeys[row.RowIndex].Value);
                           slip_No = row.Cells[2].Text;
                            }
                        }
                         else
                            {
                                slip_No = row.Cells[2].Text;
                                slipnoList.Add(slip_No);
                            }
                  if (slipnoList.Contains(dist_requests.FirstOrDefault().SLIP_NO))
                            {
                                string confirmValue = Request.Form["confirm_value"];
                                int len = confirmValue.Split(',').Length - 1;
                                confirmValue = confirmValue.Split(',')[len];
                                if (confirmValue == "Yes")
                                {
ScriptManager.RegisterStartupScript(this, this.GetType(), "alert", "Confirm()", true);
                                }
                             if (confirmValue == "No")
                                {
ScriptManager.RegisterStartupScript(this, this.GetType(), "alert", "Confirm()", true);
                                return;

                                                        }  

Javascript code as follows

  function Confirm() {
       var confirm_value = document.createElement("INPUT");
       confirm_value.type = "hidden";
       confirm_value.name = "confirm_value";
       if (confirm("There are some more items with same slip number is there. Do you want to proceeds?")) {
           confirm_value.value = "Yes";
       } else {
           confirm_value.value = "No";
       }
     document.forms[0].appendChild(confirm_value);

i我在上面的代码中调用上面的java脚本函数，如下所示



ScriptManager.RegisterStartupScript（this，this.GetType（），alert，Confirm（），true）;

在gridview中如下



Slipno Slipdate Zone区位置



2365 28.05.2018 Fereke Oung 1001

2365 28.05.2018 Ferekes Sordi 1002



i已经在提交按钮中写了上面的代码，如果在gridview中没有多次存在意味着我想向用户显示消息。



用于向用户显示消息我在c＃后面的代码中使用javascript函数。



但是当我点击提交时，java脚本函数警报信息没有显示。



我的下面代码中的错误是什么？


ScriptManager.RegisterStartupScript（ this，This.GetType（），alert，Confirm（），true）;



我必须在上面的代码中做出哪些更改。



我尝试了什么：



参考上文..

i am calling the above java script function in above code, below line as follows

ScriptManager.RegisterStartupScript(this, this.GetType(), "alert", "Confirm()", true);
In gridview as follows

Slipno Slipdate Zone Section Location

2365 28.05.2018 Fereke Oung 1001
2365 28.05.2018 Ferekes Sordi 1002

i have written above code in submit button , if in the gridview slip no exists more than once means i want to show the message to the user.

for showing message to the user i am using javascript function in code behind c#.

But when i click the submit, the java script function alert message is not showing.

what is the mistake in my below code

ScriptManager.RegisterStartupScript(this, this.GetType(), "alert", "Confirm()", true);

what changes i have to made in my above code.

What I have tried:

refer to above..