GridView RowStyle Dependent On Property Of Item Row Bound To?
Jan 19, 2010
I'm currently using a GridView and I want to set the CssClass for the Row depending on a property of the object that the row is being bound to.I tried the following:
<asp:GridView id="searchResultsGrid" runat="server" AllowPaging="true" PageSize="20" AutoGenerateColumns="false">
<!-- The following line doesn't work because apparently "Code blocks
aren't allowed in this context --> <RowStyle CssClass="<%#IIF(DataBinder.Eval(Container.DataItem,"NeedsAttention","red","") %>
<Columns>
<!--............-->
</Columns>
</asp:GridView>
Now I could simply handle theGridView's RowDataBound event and change the css class of the row there...but I'm trying to keep a clear separation between the UI and the page/business logic layers.
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Similar Messages:
Jan 20, 2010
I'm currently using a GridView and I want to set the CssClass for the Row depending on a property of the object that the row is being bound to.
I tried the following but it does not work (see comments):
[code]...
Now I could simply handle the GridView's RowDataBound event and change the css class of the row there...but I'm trying to keep a clear separation between the UI and the page/business logic layers.
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Aug 9, 2010
I have a GridView control that has one column of checkboxes set up like this:
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="RowCheckBox" runat="server" Enabled="false" Checked='<%# (bool)DataBinder.Eval(Container.DataItem ,"Associated") %>'/>
</ItemTemplate>
</asp:TemplateField>
Then when the user clicks an Edit button I run a script that enables all the checkboxes (which works fine), and then when the user then clicks on a checkbox the tick is appearing or disappearing as it should.
The problem I'm having is that when I try to read the value of the checkbox from the codebehind:
CheckBox checkBox = (CheckBox) row.FindControl("RowCheckBox");
bool checked = checkBox.Checked;
If the value bound to it was true then checked is still true, no matter if it was toggled or not.
Edit: Corrected a spelling mistake. Question still stands though...
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Aug 12, 2010
Conditional GridView Rowstyle with CssClass Asp.net forum,
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May 25, 2010
I have a link button in my gridview. It is populating correctly; however, being I am populating the values in the gridview using "Eval()" method I don't know how to get the value of the selected Link Button (which is only selected by a user actually clicking
the Link Button).
The user can click on the text directly (instead of showing the "Select" auto created). I want to be able to capture the item they have clicked on's Text property.
Example:Column 1
Value1
Value2
Value3
When the click on "Value2" I want the text property to be stored in a string variable (In this case the text would be "Value2"). In the past I have captured this through GridView.SelectedValue; however, I am not using autopopulate selected button so I need to do this manually and I am unsure as to how I will do this.
Here is my code for HTML and I have not created any code for C# (I want to capture the item using C# in my Grd_Tables_SelectedIndexChanged Event)
[code]....
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Jun 23, 2010
I have to set a LinkButton's OnClientClick attribute but I don't know what this value is until the LinkButton is bound to. I'm trying to set the value when the repeater binds, but I can't workout how to get the 'boundItem/dataContext' value.
<asp:Repeater ID="Repeater1" runat="server">
<ItemTemplate>
<asp:LinkButton Text="HelloWorld" ID="Hyper1" runat="server" OnDataBinding="Repeater1_DataBinding" >
</asp:LinkButton>
</ItemTemplate>
</asp:Repeater>
protected void Page_Load(object sender, EventArgs e)
{
var list = new List<TestObject>();
list.Add(new TestObject() {TestValue = "testing1"});
list.Add(new TestObject() { TestValue = "testing2" });
list.Add(new TestObject() { TestValue = "testing3" });
this.Repeater1.DataSource = list;
this.Repeater1.DataBind();
}
public void Repeater1_DataBinding(object sender, EventArgs e)
{
var link = sender as HyperLink;
//link.DataItem ???
}
Is there anyway to find out what the current rows bound item is?
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Jul 31, 2013
i am implementing a update query module.i am displaying all fields from a table for a term searched. well now i am implementing update option for the record which are displayed, i have like 70 columns in my table, and i want to know how to restrict some selected fields to be only read only while the form can be updated ?Like if user select to update a record then some selected field such as "Timestamp, UID etc some selected fields" remains READ ONLY !
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Mar 21, 2011
I've got an ArrayList bound to a repeater control. In an associated, but separate, area of the page, I'd like to get the first and last item out of the bound control. It's actually a paging element to a table.
Here is the code for the Repeater:
this.Repeater1.DataSource = pagingArray;<br>
this.Repeater1.DataBind();<br>
<asp:Repeater id="Repeater1" runat="server"><br>
<ItemTemplate><br>
<a href="/?page=<%# Container.DataItem %>"><%# Container.DataItem %?</a><br>
</ItemTemplate><br>
</asp:Repeater><br>
I'd like to get the first element from this repeater and display it. The code that I have right now (that doesn't work) is:
<% Response.Write(Repeater1.Items[0].ToString()); %>
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Apr 17, 2010
but I am new with MVC and database-driven applications.
I hava a table with Cities (ID,Name) and one with Businesses(ID,CityID,Name). The later has a foreign key relationship with the first table.
I used a linq-to-SQL class to create my models.
My problem is that I need to access the City Name(not the ID) when displaying the Business Model View.
How can I do this? if from my controller I call the View passing the auto-generated Business Model, I only have access to the ID.
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Oct 29, 2010
When are declared values bound to properties of a user control in WebForms?
I have a user control which has a public property which is an enum type. In my aspx page I'm setting it's value declaratively. In the ascx I'm outputting the value to the page using <%= %> syntax. The value that is output by the echo syntax is always zero 0. The enum does nopt have a zero value.
My question therefore is, is echo <%= %> syntax evaluated before the declared value is bound to the property?
[code]....
The output is :
<a href="foo.aspx?foo=0">Foo</a>
<a href="foo.aspx?foo=0">Foo</a>
<a href="foo.aspx?foo=0">Foo</a>
I'm going to assume that zero is the "unset" value for any enum member and therefore assume that <%= is executed before the value is bound to the property.
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Jul 21, 2011
I am binding Dropdownlist from sqldatasource. Is it possible to check conditions with Dropdownlist on each item bound, based on the select command.
Code:
<asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="SQLDataSource1" DataTextField="emp_name" DataValueField="emp_id"></asp:DropDownList>
<asp:SqlDataSource ID="SQLDataSource1" runat="server" ConnectionString="<%$ConnectionStrings:ConnectionString1 %>" SelectCommand="select emp_id,emp_name,status from emp_master"></asp:SqlDataSource>
In this example code, when binding if the status of the employee is OffDuty then it must be highlighted in DropDownList.
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Sep 22, 2010
I know the question has already been posted here but we didn't get to an real solution.I have bound my ListView to an SqlDataSource and I want to write some text in a control present in the view created in the LayoutTemplate depending on some properties of the rows returned.Obviously, I'm using the ItemDataBound event to feed my items but this is not the point.
The spontaneous solution was to bind the ListView.DataBound event and access the raw datasource (a DataTable?) and do the required calculations.I inspected the Items property and, despite it was not empty, the related DataItem property was null.The only work-around I can come to is to execute the calculations in the ItemDataBound event and accumulate the result in some private fields. But it's really ugly to see and makes harder to get some of the required values.
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Jan 31, 2011
I have a databound FormView with a dropdown list of categories. All works as expected, but I want to provide the facility for the user to add a new category to the list and I can't find an elegant way to do it. My current approach is to have a simple modal popup (Ajax toolkit) with a FormView (bound to the Categories table). That successfully inserts the new row, but it doesn't show in the dropdown so it can't be selected. I can force a refresh by calling formview.DataBind() in a suitable event handler, but that of course moves the formview off the selected record and loses any changes the user may have made.
Is there a convenient way (perhaps using AJAX, avoiding a postback entirely) to update the Categories table and refresh the dropdown without moving off of the current FormView's record? I feel sure this
must be a frequent and basic requirement, but I've not found any mention of how to implement it.
[ASP.Net 4.0, by the way]
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Mar 12, 2010
Im using LINQ2SQL and i have an object called Article. Its has 2 properties FinishText and SwedishText. The idea is to let the user choose language. Swedish is default.
I bind the objects to a listView and there is a label that takes the swedish language. When the user presses the Finish flag button i want the objects to reload and the finish text to show instead of the swedish. The problem is that the text label is bound to the SwedishText property in the mark up like this:
<%#DataBinder.Eval(Container.DataItem, "SwedishText")%>
I can think of some ways to solve this, and i have one that doesnt work that well. My question is, what would be a good way to solve this? Im not so experienced so i know that there are lots of you out there that know how to do this much better.
Another problem i dont like my solution to is when i have an object that has a association with my Article object, like ArticleCategory. The ArticleCategoryId of my Article is, lets say 31, which is corresponds to the category "Movies". I dont want to display the category id but rather the name of the category itself (Movies).
So this is what i do:
<%#GetCategoryNameFromId(DataBinder.Eval(Container.DataItem, "Article_Id"))%>
I call a method that recreates the artice object and from there creates the ArticleCategory and gets the name from it. Its a horrible solution cause it involves lots of trips to the Database. Especially since i do similar things with other properties.
Just wanted to hear what is a proper and good way to deal with these common but for me new tasks.
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Apr 9, 2010
I have what's bound to be a stupid question, so I'll apologize for what I think should be an obvious answer my brain just can't see. My problem is very simple. I have a Repeater control bound to a SqlDataSource. The ItemTemplate in this case is one complicated beast, and rendering can take a loong time if too many records are returned; so I need to maintain tight control over how many records are brought back from the data source.
Is there not some way of either stopping the creation of subsequent RepeaterItems once a certain count has been reached, or cancelling the bind if more than a certain number of records are returned? I know I can grab the record count from the AffectedRows property in the Selected event of the DataSource, but I've encountered a brain-lock on how to stop/inhibit the binding (or RepeaterItem creation beyond x records).
I'm happy with either aborting the binding altogether if the record count is too high (displaying no records), or simply stopping it after X records are returned; at this point, I'm not picky. Either way would work, and it seems I ought to be able to readily figure out either one, but my brain has simply gone into neutral.
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Sep 6, 2010
I would like to make the datagrid bound column to hyperlink for redirecting to the details page .
For example , when my mouse over certain row of bound column in datagrid , it will change the colour to blue . Also , I can click it and redirect to the detail page .
Notes : I don't wan to use hyperlink column
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Apr 23, 2010
I have a dropdown binded with database value Eg : A001, A002, A003 etc. When ever i use to select the first value A001 , it is not going for postback. After selecting the second index value A002 n then selecting the first value A001 , i use to post back. And i dnt want to use appent data bound here.
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Dec 23, 2013
How do I fill ProductNameID on selection of ProductCategoryID dropdown by passing
ProductCategoryID .SelectedValue...
aspx Code
<asp:GridView ID="gridPosition" runat="server" AutoGenerateColumns="False" ShowFooter="True" OnRowDataBound="gridPosition_onRowDataBound"
DataKeyNames="SaleDetailID" OnRowEditing="gridPosition_RowEditing"
OnRowCancelingEdit="gridPosition_RowCancelingEdit" OnRowUpdating="gridPosition_RowUpdating"
OnRowDeleting="gridPosition_RowDeleting" ShowHeaderWhenEmpty="True" CssClass="manage-admin"
Width="500px" GridLines="None">
[Code] .....
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Sep 15, 2010
I would like to make the datagrid bound column to redirecting to the details page .
For example , when my mouse over certain row of bound column in datagrid , it will change the colour to blue . Also , I can click anywhere of the row and the will redirect to the detail page .
Notes : I do not want to use hyperlink column and do not want to fix the text for every row. I want to use datafield, CommandName and CommandArguement.
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Jul 2, 2010
GridViewDetails uses templatefields. In edittemplate I put a button called "ButtonUpdateAdjustAmount" with OnClick="Update_AdjustAmount" in the EditItemTemplate for the "Amt to be Adj" column. There is also a textbox. My user's should be able to edit the textbox, but I also want the ability to click the button and the textbox populated with the correct calculated value. The formula varies based on the "code" column which is a dropdownlist called "DropListCode".
I am fairly new to asp.net, vb, etc...so forgive my code writing. Eventually I need to also put the same functionality on the insertrow for my gridview. But first wanted to get the edit one working. I am using templatefields for all columns and the FooterTemplate to perform the Insert New Detail Line.
I can get the functionality to work for the first data row and only if I take out the If code.SelectedValue = ... line and leave 1 static formula. However that isn't going to work. If DropListCode.SelectedValue is DNR then AdjAmt should be ((q_ordered - q_received) * cost). If DropListCode. SelectedValue is OV then AdjAmt should be (RKNumber * cost). If DropListCode.SelectedValue is NB the AdjAmt should be ((q_received - q_ordered) * cost). If DropListCode.SelectedValue is DAM then AdjAmt should be (RKNumber * cost)
Code behind for the OnClick:
[Code]....
.aspx page - GridViewDetails programming:
[Code]....
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Nov 9, 2010
I'm using the AJAX ModalPopupExtender control in order to popup a "Login" panel. My problem is that the TargetControlID property happens to be an ASP.Net Menu Control Item. How do I reference that menu item where it's becomes a valid value for the TargetControlID property?
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Sep 3, 2010
I'm trying to use the menu control for the first time in ASP.NET and everything is fine except for the fact that I can't seem to change the item spacing property. My menu is a horizontal menu where the menu items have come from a sitemap file. I've tried changing the menu item spacing in both the dynamic and state menu item properties but nothing seems to change it. I've also tried changing the item spacing via css but that doesn't work either.
[Code]....
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Aug 31, 2010
I have two drop down list on a page. The first one list projects and the second list users. The userlist is populated with an object datasourse that pulls a list of users for the selected Project.Whenever the Project list selection changes the second ddl Userlist always reverts to the first person in the list instead the person that was selected before a new Project was chosen.
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Jan 13, 2010
If the gridview binds to empty dataset, I need to still show a gridview so that users can ADD more using the textfields in the bottom of the footer template. Since the gridview is empty it won't bind not allowing rendering of the <footer template> I guess I should create a empty dataset if the gridview is empty. How do I check for this and can this be done in GridviewRowEventArgs
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Oct 23, 2010
I've been working on a webform to pull data from an oracle database v10. I can create a gridview1 with Selection enabled and it will populate with data without a problem. However when I create a second gridview and bind with a control to the first gridview, I get the following error at runtime when I click on one of the Selects.
Exception Details:
Oracle.DataAccess.Client.OracleException: ORA-00936: missing expressionVS 2010.
[code]...
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