I want to get control's value in DataList but I can't.
I tried to use FindControl() but still have error ("
Object reference not set to an instance of an object.
")
this is my code (
string id = ((HiddenField)DataList2.FindControl("hfID")).Value;
)
Finding DropDownList Control Within DataList Control?
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<asp:LinkButton ID="AddBtn" runat="server">Add Committee</asp:LinkButton>
</FooterTemplate>
</asp:DataList>
how to set pagination using datalist control in asp.net.
View 2 RepliesI am pulling states from a database. When I get to "district of columbia" I would like to change the result to "washingtondc".
Can this be done from within the contol? A basic IF THEN? How do I go about it?
How to set paging in datalist control using asp.net+C#.net?
View 6 RepliesHow to do paging in datalist control
View 1 RepliesThe data that shows up in my DataList does not align to the top. How do I align my data to the top? It looks to me that the data is center in the middle vertically.
View 6 RepliesI am using datalist control on Default.aspx. In that datalist control I have ASP Link Button and the data is fetched from the Database while loading the control. Now, When my user clicks on that particular Link Button, the data associated with it should be shown on the next page. Which event shall I use? How do i select the values that I would show on the next page?
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i have an datalist and some controls are in itemtemplate in it, what do i do if i wanna remove specific control in datalist ?i try to use event Itemdatabound to remove control but nothing happenshere my code in aspx.cs :
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here code in aspx
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i have a Image control , and when ImageUrl is empty , i will remove it.
I cannot dig out the controls correctly in my code, as they are hidden in a datalist. I am trying to update some data into a row in the 'resume' table. Is INSERT INTO corrent for updating data which is already there?
and also i cannot find the controls in the datalist correctly....?
protected void LinkButton2_Click(object sender, EventArgs e)
{
string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
System.Data.SqlClient.SqlConnection sqlConnection1 =
new System.Data.SqlClient.SqlConnection(connectionString);
System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand();
cmd.CommandType = System.Data.CommandType.Text;
cmd.CommandText = "INSERT INTO resume (confirmed,comment,reference) VALUES (@confirmed,@comment,@reference) WHERE number = @number";
cmd.Parameters.AddWithValue("@number", DataList1.FindControl("picturesLabel0").Text);
cmd.Parameters.AddWithValue("@confirmed", DataList1.FindControl ("RadioButton1").SelectedValue);
cmd.Parameters.AddWithValue("@comment", DataList1.FindControl ("TextBox3").Text);
cmd.Parameters.AddWithValue("@reference", DataList1.FindControl ("TextBox4").Text);
cmd.Connection = sqlConnection1;
sqlConnection1.Open();
cmd.ExecuteNonQuery();
sqlConnection1.Close();
I have a datalist that displays text which links to another page. Depending on which value is selected the data shows the relevant data for the selected record. Using the code below I have tried to insert the 'RecId' value into the url to get the correct data but I get an error because the syntax is wrong.
<asp:DataList ID="DataList1" runat="server" DataSourceID="SqlDataSource1" ShowFooter="False" ShowHeader="False">
<ItemTemplate>
<asp:HyperLink ID="EventDescLabel" runat="server" NavigateUrl=http://www.MySite.com/Courses/tabid/98/ModuleID/509/ItemID/" & '<%# Eval("RecId") %>' & "/mctl/EventDetails/Default.aspx"
Text='<%# Eval("EventName") %>' />
</ItemTemplate>
</asp:DataList>
Im using Nested DataList in My Application. But i m not able to find control Inside Child DataList. (I want to Find Label Control In ItemDataBound Of ChildDataList)
View 3 RepliesI want to find control inside datalist, i am using this:
((Image)DataList1.Items[0].FindControl("Image1")).Visible=true;
//here got error:
Index was out of range. Must be non-negative and less than the size of the collection.
here is my aspx code:
<asp:DataList ID="DataList1" runat="server" DataKeyField="nsid">
Im not able to find control in datalist.
Protected
Sub DataList1_ItemDataBound(ByVal sender
As Object,
ByVal e As System.Web.UI.WebControls.DataListItemEventArgs)
Handles DataList1.ItemDataBound
lblshippingoutside.Visible =
Dim lblshippingoutside
As Label = CType(e.Item.FindControl("lblshippingoutside"), Label)False
End Sub
Throws an exception .
Object reference not set to an instance of an object.
Is there anyway of using jquery or javascript on datalist control. i want to do this:i list products on datalist. productname,code,price etc. alos there are 2 buttons.basket and buy. when i cick basket button, the product will add shopping basket without being postback.
View 1 Repliesi am using asp:pager to do paging for datalist... i have successfully implemented it but the problem is that he is showing all the page nos at one time instead of that i want to show 10 pages at a time then user goes on the last page then next 10 pages should show...
View 3 RepliesAm trying to use sorting and paging using a Asp.net DataList Control.....I found a Tutorial at asp.net website, but not able to understand that. I found other two links ,which exactly is of my need...but the only thing is that , it is in VB...[URL]
But Am working with C# I wanna Use Sorting & Paging For this
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How to enable paging in Asp.net Datalist control
View 1 RepliesI want to access my checkbox in code behind. I have my checkbox in my aspx file like this:
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And i'm trying to set the checkbox visible=false like this but it's not working. Error message: Object reference not set to an instance of an object.
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This is just one thing i want to do with my controls in my datalist, so i don't want to in my aspx file like this:
<asp:CheckBox ID="CheckBox1" runat="server" Visible='<%# if(Eval("isFolder")="1","false","true") %>' />
Because i have quite a lot of things i would like to do in the code behind when i'm getting my files..
Is it possible somehow to achieve this without having to put servercode in my aspx file?
i hav a datalist control with am image button and a label and i want have a button which shud redirect me to a detailed page of that product. which link button can be used in this. can it be done with button or hyperlink only needed? first page is : product.aspx on clicking datalist link VIEW MORe it shud go to detail.aspx?pid={0} how can i do this.
View 1 RepliesI have got DataList1 which contains DataList2And inside DataList2, I have placed control - CheckBox1How do i make CheckBox1 to be identified in CheckedChangedEvent
View 1 RepliesHow do I access a DataList Control on PageLoad?
This is what I have and it is not working DLSection1.Parent.Controls("StartDate")
I need to access my DataList 'startDate' field from the PageLoad Event - How do I go about doing this?
i want to bind data to html page using datalist control ...
or is there another way to bind data to simple html control ....where i am feching data from sql server ...
I have the follow code (i just listed the parts that might be the more important to understand my problem):
(Code Behind)
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(Page .ascx)
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The user control RatingControl shows the rating and the number of rates, the user control Pager is responsible for raising CurrentPageChanged when the page changes and BindData() is a function
that binds data to the Datalist control.
When the page is loaded for the first time BindData() marked with ** is executed , thereafter i only want to load data when the event CurrenPageChanged raises.
So far so good, but the problem is when the CurrentPageChanged is raised and call the BindData() function, the user controls are not loaded properly, and things that i can't understand happen, like the user controls not receiving the properties initialized when they are loaded, but the other controls inside the Datalist like lblDescription are loaded correctly with their data.
Summarizing, the user controls are not loaded correctly in this particular case when the DataBind() is called by an event.
I already searched in the internet, and i read about page life cycle, user controls and i still didn't understand why this happens and how to fix it.
i need to know how to use controls like image button and labels in datalist control,and how to use imagebutton click event which is in datalist control.
View 2 Replies
