Forms Data Controls :: Try To Handle The ItemInserting Event
Nov 28, 2010When you try to handle the ItemInserting event, the e.Values collection is empty. How do you add your fields to this collection manually?
View 1 RepliesWhen you try to handle the ItemInserting event, the e.Values collection is empty. How do you add your fields to this collection manually?
View 1 RepliesWhen I click the "Insert" button, only the ItemCommand event is fired, then it dies. In ItemCommand, the e.CommandName is "Insert".
It's very frustrating, because I already wrote a fully working page that inserts and updates data. I copied the code to make this second page, but it didn't work. So I cut away all extra code to get to the heart of the problem.
I tried looking through older posts, but no good.
<div>
<asp:DetailsView ID="CommentDetailsView" runat="server" AutoGenerateRows="False"
DataSourceID="commentAction" DefaultMode="Insert"
Width="800px" CellPadding="4" GridLines="Both">
[Code]....
[URL] how to handle item command event in above  example?
View 1 Repliesi have a gridview which consists of two columns.
1. name
2. radiobutton
when ever i click the radio button, the correspondng name should be saved in a variable in code behild(c#)
the gridview code looks as below:
[code].....
how to handle click event of linkbutton in gridview in asp.net
View 2 RepliesI have GridView control and assosiated DetailView control.
When the record form GridView is seleted, I am showing the details on DetailView.
I have set the Auto generated delete button to true. And now I want to delete the record when someone clicks the Delete button from DetailView control.
Following is the HTML markup for my details view
<asp:DetailsView id="detailsPayments" runat="server" GridLines="Vertical" ForeColor="Black" CellPadding="4"
DataKeyNames="Id" Width="125px" Height="50px" HeaderText="Payment Details"
AutoGenerateRows="False" BorderStyle="None" BackColor="White" BorderColor="#DEDFDE" BorderWidth="1px"
AutoGenerateDeleteButton="True" OnItemDeleting="DeleteItem">
<FooterStyle BackColor="#CCCC99"></FooterStyle>
[Code]....
But not able to sucessful. Getting runtime exception as follows
Stack Trace:
[Code]....
Using a listview control for the first time... I need a button for each item, and of course I need to handle the click event for the buttons... upon clicking a particular button I of course need to know which item the button is associated with so the appropriate action can be taken...
In VS, I can't select the button and see my list of available events in the properties window like is normally done for controls outside of templates like this... what do I need to do?
I have problem with gridview sorting. I am using online example to sort a grid view. see the link [URL] but I always got an error "The gridview fired sorting event without handle" on this statement "helper.ApplyGroupSort();"
<table width="100%">
<tr>
<td colspan=3><asp:Label id="category_name" Runat="server"
ForeColor="#ff0000" Font-Bold=true /></td>
</tr>
<tr>
<td colspan="3" align="center" width="100%">
<asp:GridView ID="dg_drawings"
runat="server" AutoGenerateColumns="False" EnableViewState="False" CellPadding="5" CellSpacing="0" Width="90%"
>
<Columns>
<asp:BoundField DataField="Description"
SortExpression="Description" />
<asp:BoundField DataField="sub_description"
SortExpression="sub_description" />
<asp:BoundField DataField="drawing_id" InsertVisible="False"
ReadOnly="True"
SortExpression="drawing_id" />
<asp:BoundField DataField="DRAWING_DESCRIPTION"
SortExpression="DRAWING_DESCRIPTION" />
<asp:BoundField DataField="DWG_URL" SortExpression="DWG_URL" />
</Columns>
</asp:GridView>
</td>
</tr>
</table>
Here is my C# code
public partial class listDrawings : System.Web.UI.Page
{
admin _admin = new admin();
private GridViewHelper helper;
int categoryid = 0;
protected void Page_Load(object sender, EventArgs e)
{
if (Convert.ToString(Session["logged_in"]) == "1")
{
ph_header.Controls.Add(LoadControl("../controls/builder_header.ascx"));
}
else
{
ph_header.Controls.Add(LoadControl("../controls/header.ascx"));
}
/*if (Convert.ToString(Session["details_hit"]) != "1")
{
_admin.add_page_hit("Standard Details");
Session.Add("details_hit", "1");
}
*/
string categoryidStr = Request.QueryString["categoryid"];
string category = Request.QueryString["category"];
//int categoryid = 0;
if (categoryidStr != null)
{
categoryid = Convert.ToInt32(categoryidStr);
}
category_name.Visible = true;
category_name.Text = category + " Drawing Details";
get_category_drawings(categoryid);
}
protected void get_category_drawings(int categoryid)
{
OracleConnection myConn;
OracleCommand myCmd;
if (categoryid == 3)
{
myConn = new OracleConnection(ConfigurationManager.AppSettings.Get("oracle"));
myCmd = new OracleCommand("DRAWINGS.GET_STAR_SUB_DRAWINGS");
myCmd.CommandType = CommandType.StoredProcedure;
myCmd.Connection = myConn;
myCmd.Parameters.Add(new OracleParameter("iCATEGORY", OracleDbType.Int32, ParameterDirection.Input)).Value = categoryid;
myCmd.Parameters.Add(new OracleParameter("iSUB_CATEGORY", OracleDbType.Int32, ParameterDirection.Input)).Value = 0;
myCmd.Parameters.Add(new OracleParameter("oDRAWINGS", OracleDbType.RefCursor, ParameterDirection.Output));
}
else
{
myConn = new OracleConnection(ConfigurationManager.AppSettings.Get("oracle"));
myCmd = new OracleCommand("DRAWINGS.GET_STAR_DRAWINGS");
myCmd.CommandType = CommandType.StoredProcedure;
myCmd.Connection = myConn;
myCmd.Parameters.Add(new OracleParameter("iCATEGORY", OracleDbType.Int32, ParameterDirection.Input)).Value = categoryid;
myCmd.Parameters.Add(new OracleParameter("oDRAWINGS", OracleDbType.RefCursor, ParameterDirection.Output));
}
try
{
myConn.Open();
this.dg_drawings.DataSource = myCmd.ExecuteReader();
dg_drawings.DataBind();
helper = new GridViewHelper(this.dg_drawings);
string[] cols = new string[2];
cols[0] = "Description";
cols[1] = "sub_description";
helper.RegisterGroup(cols, true, true);
helper.ApplyGroupSort();
}
catch (OracleException ex)
{
if (categoryid == 3)
{
_admin.send_email("resources/listDrawings.aspx", "DRAWINGS.GET_STAR_SUB_DRAWINGS", ex.Message);
}
else
_admin.send_email("resources/listDrawings.aspx", "DRAWINGS.GET_STAR_DRAWINGS", ex.Message);
Response.Redirect("~/error.aspx");
}
finally
{
myCmd.Dispose();
myConn.Close();
myConn.Dispose();
}
}
}
 I created nested gridview refereing asp.snippets.. Its working fine now requirement is to add Checkbox within child grid.. i added childgrid byÂ
</asp:TemplateField>
<asp:TemplateField HeaderText="Approve">
<ItemTemplate>
[Code]...
How to find child grid check box control
need to add textbox in gridview and write code in textchange event in asp.net..i show the data in gridview if i click the button i show the textboxes but i need to write the code in that textchange event in that
View 1 RepliesI have followed this article:Â [URL] ....
I have added textbox and checkbox in nested(child) gridview....
I had been created some dynamic radio buttons in a loop inside a dinamy table which is inside an UpdatePanel , but i can not handle the events my code is below:
public void MetodoCreacion()
{
RadioButton RBtn = null;
Table table = new Table();
TableRow row = null;
TableCell cell = null;
for (int i = 0; i < 5; i++)
{
row = new TableRow();
cell = new TableCell();
RBtn = new RadioButton();
RBtn.ID = "RBGN_" + i.ToString();
RBtn.GroupName = "RBGN1";
RBtn.Text = "Opcion " + i.ToString();
RBtn.CheckedChanged += new EventHandler(RBtn_CheckedChanged);
RBtn.AutoPostBack = true;
cell.Controls.Add(RBtn);
row.Controls.Add(cell);
table.Controls.Add(row);
}
UpdatePanel1_UpdatePanelAnimationExtender.Controls .Add(table);
}
public void RBtn_CheckedChanged (object sender, EventArgs e)
{
Label1.Text = ((RadioButton)sender).ID;
}
and the controls doesent call the event.
I would like to know how deadlock is happen, i have facing alot of sql deadlock in my event handle on server computer.
View 3 RepliesI am having a treeview with nodes of products populated on first time through xmlresponse.Onselectednodechanged event, I have performed xmlseriaization to build a request to get list of subproducts. Now, my issue is how do I handle the next On_click event requesting for items under subproducts which will inturn calls the same onselectednodechanged method and how do I write condition to skip above steps to occur, since I need to build a different request on click of subproducts asking for items.
View 1 RepliesI found this code to handle textbox key press event, but when I tried it in my program, it says
Public Sub txt_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtWeightLoss_Disk3.KeyPress
i just made an onmouseover and onmouseout event using javascript and called the functions from the asp image tag like <contol.....onmouseover="thissss()" /> my question is why do i need to write javescrit for this? have heard so much praise of asp.net and c#! is there a way that is code to handle these events for all types of object using the .cs file (c#) directly?? i would assume the code will be under the page load event.
note:-
do not give answers assuming that the asker is a new bee consider him a completely un-educated person when it comes to coding )
I just need to write the string in one textbox from another one.But the problem that i felt is that what kind of event handing i need to include for textbox.Simply,when user type the particular string on textbox and when h/she pressed the tab button,then this string should automatically be displayed in another textbox within same webpage.
View 1 RepliesI get this error on a Node click event. I added sSessionDate in the code below to load the grid but get the error. Does anyone have any ideas. here is the code:
[Code]....
because of i want to use some cods in difrent projects i create a class library and i write my codes there but i don't have access to my controls event in this example i try to check something befor the user login to website and if there is an error show the user a clear error message
[Code]....
in this case because of my codes are in class library the event for MainLogin.LoggingIn doesn't work and it return an error that it doesn't understand the MainLogin.LoggingIn event.
I made a web form in asp.net and I am using loop to add button on the page. But problem is this, I'm not able to handle event of it.
View 3 RepliesI'm developing IP Blacklisting HttpModule in asp .net application and I found one very annoying thing. Each request to the asp net page generates tens of "subrequests" to application resources like images, client side scripts, styles etc.
Now in my application I'm listing to the BeginRequest event and when it is fired I'm loading Dictionary with blacklisted IPs from application cache and check user's IP against it. I've made a simple log of what is actualy happening during each page view, here are the results:
[Code]....
As you see, one request to Login page causes BeginRequest to fire 18 times, there is 18 dictionary loads, 18 lookups etc. That's not the way I want it to be.
Is there any other event that is raised only once per each request? Where do you place the blacklisting mechanism in your applications? I know I can do it through ISAPI filter, but the catch is, this site is on the shared hosting and I'm not sure I can use it on their IIS. Also I'm not sure if ISAPI filter can access some piece of cache with this blacklist (I don't want to load it from DB on each request, that's obvious).
I've created an array of buttons like static Button[] myButtons = new Button[3];
and then creating and adding buttons to my panel like myButtons[i] = new Button();
myPanel.Controls.Add(myButtons[i]);
in my code behind.
How can I handle the events that occurs when a user clicks these buttons, like using OnClick="myMethod" with regular buttons?
I wanted to catch and handle the ListBox Double Click event and looked for some sort of mehtod to do this. In one of the articles i found the usage of;
Request("__EVENTARGUMENT")
-------------CODE----------------
If(Request("__EVENTARGUMENT") <>[code]....
I have implemented the code using this Request param and the code works fine. What i wanted was to understand how this works to accomplish the task.
I want to create chart with mouse click event .
If I click on any bar it should render to new chart .
I don't want to use Sessions to handle each click event inside treeview selected node changed.Secondly, if you suggest me to use treenode.SelectedValue then I would say my values are dyanmically generated.Everytime a node a clicked, the selected node value is sent in the next request xml to get response and xml schema is different for each click. How do I handle this each click event other than using session variables. I thought of using Request.Item (and integrating with URL redirect property) but I don't want to use that.
[Code]....