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How do you get POSTed value from dynamically populated dropdownlist without the use of UpdatePanel?


How do you get POSTed value from dynamically populated dropdownlist without the use of UpdatePanel?

By : Ashley Miller
Date : November 22 2020, 04:01 AM
should help you out If you still need to use the Request.Form.Get or Request.Params you should call it on ddlProdukt.UniqueID as it's separator is '$' versus '_' on the .ClientID
code :


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Water mark posted to server when using DropdownList in UpdatePanel

Water mark posted to server when using DropdownList in UpdatePanel


By : clemenslm
Date : March 29 2020, 07:55 AM
Hope that helps Pretty old thread but had this issue recently. Here's something I came up with.
code :
$('#<%=Button1.ClientID%>').click(function () { 
                if (typeof("Page_ClientValidate") === "function") {
                    if (Page_ClientValidate()) {
                        $.watermark.hideAll();
                    }
                    else {
                        $.watermark.showAll();
                    }
                }
                else { $.watermark.hideAll(); }
});
Dynamically-added dropdownlist not posted

Dynamically-added dropdownlist not posted


By : user6916016
Date : March 29 2020, 07:55 AM
To fix the issue you can do Try this out:- http://jsfiddle.net/adiioo7/2Ra2S/1/
Just provide name attribute to dynamically added select.
code :
jQuery(function($){
    $("#btnAddDropdown").on("click",function(){
        $("#someDiv").html("<select name='test'><option>Test</option></select>");                           
    });

     $("#btnSubmit").on("click",function(){
         $("#myForm").submit();
     });

    $("#myForm").on("submit",function(){
        var datastring = $("#myForm").serialize();
        console.log(datastring);
    });
});
<form id="myForm" action="/some/where" method="POST">
     <div id="someDiv">
     </div>
</form>

<input type="button" value="Add Dropdown" id="btnAddDropdown" />
<input type="button" value="Submit Form" id="btnSubmit" />
Dynamically populated DropDownList setting SelectedIndex changes both DropDownList

Dynamically populated DropDownList setting SelectedIndex changes both DropDownList


By : user2132792
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further Items.AddRange(array) preforms a shallow copy of array.
to preform a deep copy change
code :
DropDownList1.Items.AddRange(jobs); 
DropDownList1.DataSource = jobs;     

DropdownList1.DataBind(); 
Can't bind Dynamically created GridView based on Dynamically populated DropDownList selected value

Can't bind Dynamically created GridView based on Dynamically populated DropDownList selected value


By : Tongphuoc Lam
Date : March 29 2020, 07:55 AM
this will help Good to know you found a workaround. Based on code in your question, making following changes will work for you:
SqlDataSourceFormulariDaAppr.SelectParameters.Clear(); will clear the parameters you previously added
code :
SqlDataSource SqlDataSourceFormulariDaAppr = new SqlDataSource();
        SqlDataSourceFormulariDaAppr.ID = "SqlDataSourceFormulariDaAppr";
        this.Page.Controls.Add(SqlDataSourceFormulariDaAppr);
        SqlDataSourceFormulariDaAppr.ConnectionString = System.Configuration.ConfigurationManager.ConnectionStrings["MyConnectionString"].ConnectionString;
        SqlDataSourceFormulariDaAppr.SelectCommand = "Query";
        SqlDataSourceFormulariDaAppr.SelectParameters.Add("userID", DropDownListUtenti.SelectedValue);
        SqlDataSourceFormulariDaAppr.DataBind();
        GridViewFormulariDaAppr.DataSource = SqlDataSourceFormulariDaAppr;
        GridViewFormulariDaAppr.DataBind();
SqlDataSourceFormulariDaAppr.SelectParameters.Clear();
   protected void DropDownListUtenti_SelectedIndexChanged(object sender, EventArgs e)
{
    populateGrid();
}
SqlDataSourceFormulariDaAppr.SelectCommandType = SqlDataSourceCommandType.StoredProcedure;
SqlDataSourceFormulariDaAppr.SelectCommand = "Query";
Unable to get ID for a asp:dropdownlist which gets populated dynamically

Unable to get ID for a asp:dropdownlist which gets populated dynamically


By : roopi rs
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further I have an unbound list that gets populated. , Use this to get the selected value of DropdownList:
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