DataSource Controls :: Form Freezing On "Search As You Type"?
Jun 28, 2010
I write a code which give intellisense on a textbox on text_changed event by using autocomplete. This autocomplete get data from database (SQL Server). It works fine but problem is, the form gets freeze while searching data on database. Even sometimes it won't give any intellisense or application get crash (rare case).
Any improvements I can do in this code:
AutoCompleteStringCollection acnm = new
AutoCompleteStringCollection();
object locker =
new
object();
[Code]....
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Oct 10, 2010
I've got a gridview that I need to perform filters on. All works great until I try and add a date range..
Below is the code. Basically I have 5 dropdown lists which all filter as expected giving them the option to use each one or just the ones they need.
The problem is they want to also have the option of filtering by date i.e date range or greater than or less than or equal to etc..
As soon as I add the date parameter it stops the other filters working. I'm guessing because I have a null value in the date field (textbox) if they dont use the option??
Does anyone have a sample on how to filter by dropdown lists and dates keeping in mind they wont use all the filter options?
<asp:Content ID="Content1" ContentPlaceHolderID="HeadContent" runat="server">
<style type="text/css">
.style2
{
width: 100%;
}
.style3
{
width: 137px;
}
</style>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
</br>
<table>
<tr>
<td>
Person Responsible</td>
<td>
<asp:DropDownList ID="DDLPersonResponsible" runat="server"
DataSourceID="SqlDataSource2" DataTextField="AssignedTo"
DataValueField="AssignedTo" AppendDataBoundItems="True"
AutoPostBack="True" Height="22px" Width="200px">
<asp:ListItem Text="All" Value="%"></asp:ListItem>
</asp:DropDownList>
</td>
</tr>
<tr>
<td>
Location</td>
<td>
<asp:DropDownList ID="DDlLocation" runat="server" Height="22px" Width="200px"
DataSourceID="SqlDataSource3" DataTextField="location"
DataValueField="location" AppendDataBoundItems="True"
AutoPostBack="True">
<asp:ListItem Text="All" Value="%"></asp:ListItem>
</asp:DropDownList>
<asp:SqlDataSource ID="SqlDataSource3" runat="server"
ConnectionString="<%$ ConnectionStrings:ASPNETDBConnectionString1 %>"
SelectCommand="usp_Locations" SelectCommandType="StoredProcedure">
</asp:SqlDataSource>
</td>
</tr>
<tr>
<td>
Activity/Product/Service</td>
<td>
<asp:DropDownList ID="DDlActivity" runat="server" DataSourceID="SqlDataSource4"
DataTextField="Activity" AppendDataBoundItems="True"
AutoPostBack="True" Height="22px" Width="200px">
<asp:ListItem Text="All" Value="%"></asp:ListItem>
</asp:DropDownList>
<asp:SqlDataSource ID="SqlDataSource4" runat="server"
ConnectionString="<%$ ConnectionStrings:ASPNETDBConnectionString1 %>"
SelectCommand="usp_Activity" SelectCommandType="StoredProcedure">
</asp:SqlDataSource>
</td>
</tr>
<tr>
<td>
Risk Ranking</td>
<td>
<asp:DropDownList ID="DDlRiskRanking" runat="server" AppendDataBoundItems="True"
AutoPostBack="True" >
<asp:ListItem Value="%">All</asp:ListItem>
<asp:ListItem>1</asp:ListItem>
<asp:ListItem>2</asp:ListItem>
<asp:ListItem>3</asp:ListItem>
<asp:ListItem>4</asp:ListItem>
</asp:DropDownList>
</td>
</tr>
<tr>
<td>
Reference</td>
<td>
<asp:DropDownList ID="DDLReference" runat="server" DataSourceID="SqlDataSource5"
DataTextField="Reference" AppendDataBoundItems="True"
AutoPostBack="True" Height="22px" Width="200px">
<asp:ListItem Text="All" Value="%"></asp:ListItem>
</asp:DropDownList>
<asp:SqlDataSource ID="SqlDataSource5" runat="server"
ConnectionString="<%$ ConnectionStrings:ASPNETDBConnectionString1 %>"
SelectCommand="usp_SelectReference" SelectCommandType="StoredProcedure">
</asp:SqlDataSource>
</td>
</tr>
<tr>
<td>
Target Date</td>
<td style="margin-left: 40px">Greater than
<asp:TextBox ID="txtstartTargetDate" runat="server" AutoPostBack="True"></asp:TextBox> Less Than
<asp:TextBox ID="txtendTargetDate" runat="server" AutoPostBack="True"></asp:TextBox>
</td>
</tr>
</table>
<asp:SqlDataSource ID="SqlDataSource2" runat="server"
ConnectionString="<%$ ConnectionStrings:ASPNETDBConnectionString1 %>"
SelectCommand="usp_AssignOwner" SelectCommandType="StoredProcedure">
</asp:SqlDataSource>
<br />
<asp:GridView ID="GridView1" runat="server" AllowSorting="True"
AutoGenerateColumns="False" DataKeyNames="IssueId"
DataSourceID="SqlDataSource1" Width="803px" CellPadding="4"
ForeColor="#333333"
EmptyDataText="There are no matching records to display.">
<AlternatingRowStyle BackColor="White" />
<Columns>
<asp:BoundField DataField="IssueId" HeaderText="IssueId" InsertVisible="False"
ReadOnly="True" SortExpression="IssueId" />
<asp:BoundField DataField="BriefDescription" HeaderText="BriefDescription"
SortExpression="BriefDescription" />
<asp:BoundField DataField="DateEntered" HeaderText="DateEntered"
SortExpression="DateEntered" />
<asp:BoundField DataField="EnteredBy" HeaderText="EnteredBy"
SortExpression="EnteredBy" />
<asp:BoundField DataField="Likelihood" HeaderText="Likelihood"
SortExpression="Likelihood" />
<asp:BoundField DataField="Consequence" HeaderText="Consequence"
SortExpression="Consequence" />
<asp:BoundField DataField="Location" HeaderText="Location"
SortExpression="Location" />
<asp:BoundField DataField="Activity" HeaderText="ActivityProductService"
SortExpression="Activity" />
<asp:BoundField DataField="Scope" HeaderText="Scope"
SortExpression="Scope" />
<asp:BoundField DataField="Aspect"
HeaderText="Aspect" SortExpression="Aspect" />
<asp:BoundField DataField="AspectRevised" HeaderText="AspectRevised"
SortExpression="AspectRevised" />
<asp:BoundField DataField="Impact" HeaderText="Impact"
SortExpression="Impact" />
<asp:BoundField DataField="Objective" HeaderText="Objective"
SortExpression="Objective" />
<asp:BoundField DataField="KeyAction" HeaderText="KeyAction"
SortExpression="KeyAction" />
<asp:BoundField DataField="TargetDate" HeaderText="TargetDate"
SortExpression="TargetDate" />
<asp:BoundField DataField="PersonResponsible" HeaderText="PersonResponsible"
SortExpression="PersonResponsible" />
<asp:BoundField DataField="PercentageCompleted"
HeaderText="PercentageCompleted" SortExpression="PercentageCompleted" />
<asp:BoundField DataField="Reference" HeaderText="Reference"
SortExpression="Reference" />
<asp:BoundField DataField="Comments" HeaderText="Comments"
SortExpression="Comments" />
<asp:BoundField DataField="Status" HeaderText="Status"
SortExpression="Status" />
<asp:BoundField DataField="AssignedTo" HeaderText="AssignedTo"
SortExpression="AssignedTo" />
<asp:BoundField DataField="RiskRanking" HeaderText="Risk Ranking" />
</Columns>
<EditRowStyle BackColor="#2461BF" />
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#EFF3FB" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#F5F7FB" />
<SortedAscendingHeaderStyle BackColor="#6D95E1" />
<SortedDescendingCellStyle BackColor="#E9EBEF" />
<SortedDescendingHeaderStyle BackColor="#4870BE" />
</asp:GridView>
<br />
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:ASPNETDBConnectionString1 %>"
SelectCommand="usp_AllIssues" SelectCommandType="StoredProcedure" FilterExpression="assignedto like '{0}' and location like '{1}' and activity like '{2}' and riskranking like '{3}' and reference like '{4}' and targetdate > '{5}'">
<FilterParameters>
<asp:ControlParameter Name="assignedto" ControlID="ddlpersonresponsible"
PropertyName="SelectedValue" />
<asp:ControlParameter Name="location" ControlID="ddllocation"
PropertyName="SelectedValue" />
<asp:ControlParameter Name="activity" ControlID="ddlactivity"
PropertyName="SelectedValue" />
<asp:ControlParameter Name="riskranking" ControlID="ddlriskranking"
PropertyName="SelectedValue" />
<asp:ControlParameter Name="Reference" ControlID="ddlreference"
PropertyName="SelectedValue" />
<asp:ControlParameter Name="startdate" ControlID="txtStartTargetDate"
PropertyName="text" />
</FilterParameters>
</asp:SqlDataSource>
</asp:Content>
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Oct 23, 2010
i 'm working on AIRLINE RESERVATION PORTAL and it's ok how to do this ?
the user most select the number of passenger and passenger's type (Adult,Child,Infant) for example he select 2-adult,3child,1-Infant
and go next , in the next page i have to generate three type of multi application form for each passenger type
2 adult application form
3 Child application form
1 Infant application form
depend on last selected vales , to save the applications in database
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Jan 27, 2010
I want a word search i doing the search like this , but it is giving character wherever there is in the string,if i give two character like ok it is searching for a full string where ever Ok is there select * from table1 where textfield like '%word%' this query would match word but also wordabc how can i make it aware of delimitions
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Mar 29, 2010
I am using SQL Server 2008 and Full Text search.
Its working fine for PDF / doc files but not working for .JPG files.
Basically i have some document scanned and stored it in varbinnary datatype in DB.
I am able to search for .doc /.xml /.pdf files .. but not able to search .jpg.
also i am not getting ".jgp" extension in result of following query
SELECT document_type, version, manufacturer
FROM sys.fulltext_document_types order by document_type
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Feb 22, 2010
I have Visual Studio 2005 and 2008 installed on my machine. When I bring up the Find and Replace box in 2008 in any project the 'Look at these file types:' option is blank however in 2005 it keeps defaulting to the file type of RemoveFile. If I don't remember to clear it then it causes my search to fail. Does any one know how do I reset this value or remove this default option so the file type is not set and it looks at every file type when I search for a word.
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Oct 5, 2010
I am trying to write a simple search form for our site. Here is my delima... I am trying to figure out that if there is nothing to search for in one textbox then search in the next textbox. The problem is that I dont know how to format my search string: For Example:
[code]....
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May 19, 2010
I have this error "The given value of type String from the data source cannot be converted to type datetime of the specified target column." when I used sqlbulkcopy to do the transaction
Here is my code:
[code]....
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Feb 17, 2010
I'm trying to get a value from a database and I'm getting an error, see code below:
[Code]....
I get and error when I'm trying to convert the value out of the stored procedure to the string SNAME. Error is as follows:
'Conversion from type 'DBNull' to type 'String' is not valid.'
and the stored procedure is as follows:
[Code]....
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Jan 22, 2010
I get the error - Conversion from type 'DBNull' to type 'Integer' is not valid. - on the line.....
Dim newid As Integer = e.Command.Parameters("@latestRowId").Value.........in vb code behind.
I have the identical code for another page with the exception of the field names and it works fine. The only thing I did differently, as far as I know, is I copied the asp and code behind from the page that works into this page and manually changed the field and table names. I don't know what the problem is. Does anyone see any problems?
[Code]....
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May 3, 2010
I have an Interface that has its concrete class defined via a factory. Because of this I found no way to use the Interface tpye directly in my LINQ quesry so I had to use the concrete class types to creat a generic list. The LINQ query works but after calling.ToList() on the LINQ query result I get a List(of MyConcreteClass), but I need a List(of IMyConcreteClass). I have tried everything I can find: .Cast, Ctype, implicit casting, etc. but I always get back one of the (2) messages (depending on if I attempt to cast)message:
"Unable to cast object of type 'System.Collections.Generic.List`1[MyConcreteClass]' to type 'System.Collections.Generic.IEnumerable`1[IMyConcreteClass]'."
...or
"Unable to cast object of type '<CastIterator>d__aa`1[IMyConcreteClass]' to type 'System.Collections.Generic.List`1[MyConcreteClass]'."
Here is the sample code:
[Code]....
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Dec 22, 2010
I am making a website to store invoices so i can mail them to clients. So i got a table for clients, invoices and one with invoice products/services. When an invoice has no products/services added to them and it returns null i get the error "the null value cannot be assigned to a member with type System.Decimal which is a non-nullable value type."
I just started with linq. Before i always used mysql. Mostly i just had to call data from 1 table so forgive me if my linq query isn't really correct.
Dim invoices = From i In db.invoices _
Group Join p In db.products On i.id Equals p.invoiceId Into invoiceProducts = Group _
Select New With {i.client.naam, i.titel, (From iP In invoiceProducts Select iP.prijs).Sum}
i show the client's name, the title of the invoice and the total amount the clients will need to pay for products and services.
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Mar 27, 2011
simpel search form. that redirect to a search result page.
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Feb 13, 2010
How i can make the normal search string to sql server full text search parse, because when we are user enyer search text "how to run windows schedule in C#", in database we have article to to this, but data not returning and sometime is say error in key word and etc.
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Jan 18, 2010
now have tried to locate and find anything about how to make a
TEXTBOX and A Button "Search"
Problem is that I have made this "bellow" and when I then enter a "value" into texbox2 and hit enter on the button it wont show me the "emnenummer" that I have requested.
im not even sure this is the correct way to do a "search"
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox><asp:Button ID="Button1"
runat="server" Text="Button" />
<asp:SqlDataSource ID="SqlDataSource1" runat="server"[code]....
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Jul 8, 2010
My problem is that when I submit the form and returning my viewModel of type QuestionViewModel - the Type is null.
See code below.
[code]....
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Jan 2, 2010
I want to do paging the API Membership without using the datacontrols, but I get this error "Unable to cast object of type '<TakeIterator>d__3a`1[System.Char]' to type 'System.Collections.IList'." when I do this,
[code]....
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May 28, 2010
I am trying to write a table output from SQL database to a gridview/ Data List through an Object Data Source. I am a new starter and your help will be useful.
public List<Staff> GetStaff()
cmd.CommandType =
SqlConnection con =
new
SqlConnection(connectionstring);SqlCommand cmd =
new
[code]...
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Dec 7, 2010
i would like to do column and row freezing in grid view. I am using asp.net 3.5 frame work. I freezed datagrid through this [URL] link thread. But i could not freeze gridview. I want to freeze firse column and first row of the grid view.
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Feb 3, 2011
I wanted to freeze the first few columns of the gridview. I tried so many technology that were not working Is it possible in asp.net Gridview ? How to possible ?
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Feb 11, 2011
I am new to working with the Form View control so I am not quite sure how to do this.
I want my users to be able to enter search criteria into text boxes at the bottom of my FV just beneath a table and then click a button to initiate a DB search and rebind of the form.
Where do I create/ access the button's event handler to make this happen ?
I would like to have buttons in the Item template and possibly the edit template sections of the FV.
So I have created my buttons and now I want to access their button click events.
Here is my meager start this is located in the Formview databound event:
[Code]....
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Jun 25, 2010
Freezing Headers and Columns in a Gridview
[Code]....
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Jan 10, 2010
I have a gridview and its contains 16 column. I would like to use the scrollbar in the gridview with Freezing first two columns and use the scrollbar to show remaining data..
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Jan 25, 2012
I recently applied a javascript code from article "Dynamically freeze ASP.net Gridview header using Javascript" found here, ASP Snippets Article, to my page. The javascript works great, but somehow, it's overriding my CSS code for the headers. When I refresh the page, I can see the headers with my CSS in place for just a fraction of a second before it is replaced with generic styling. I am not a javascript person, so really can't troubleshoot the problem. I have a style sheet with the following code.
.dGrid {
width: 983px;
background-color: #ffffff;
[Code]......
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Jan 12, 2011
I have a datagrid and vertical-horizontal scrollbars in it. now when datagrid will have more records , scoll bars will be provided. now when i scroll vertically , my header line of the datagrid is also scrolling so i wanna freeze it. i have used javascript to freeze it , its working in IE properly but there is problem with other browser.
i used this :[URL] but its not working in other browser.
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