or
1 answer
518 views
I have a RadComboBox with miltiselect checkboxes.
<telerik:RadComboBox ID="rcbCAMs" runat="server" AppendDataBoundItems="true" CheckBoxes="true" EnableCheckAllItemsCheckBox="true" Skin="WebBlue" Width="200px" OnSelectedIndexChanged="rcbCAMs_SelectedIndexChanged" AutoPostBack="true" ></telerik:RadComboBox>
I'm binding the RadComboBox with a databind in C#
protected void BindToDataTableCAMs(RadComboBox combo) { CAPData dataSet = new CAPData(); DataTable dtCAMs = new DataTable(); dtCAMs = dataSet.GetProjectCAMs(tbProjects.Text); if (dtCAMs.Rows.Count != 0) { combo.DataTextField = "Manager"; combo.DataValueField = "Manager"; combo.DataSource = dtCAMs; } combo.DataBind(); }
How do I set the default to be Check All on the initial load?
Eyup
Telerik team
answered
on
26 May 2017
0 answers
125 views
Hello,
I used javascript to change the button text to 'Processing' onclientclick. But for the button to export excel, it didn't change back to the original text after RadGridview ExporttoExcel function. Can you help me what to solve it?
Nyein Aung
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26 May 2017
1 answer
64 views
Hello,
I'm a new user of your controls. I have been studying the documentation for the RadGrid, and find that it is terribly lacking in the basic content needed to understand how to use this control.
My questions:
I placed a RadGrid on a form, configured a few columns and supplied it with a datasource. Many columns from the datasource are hidden in the grid. When I click the link to add a new record, only the columns configured as visible appear in the resulting dropdown form.
1. Is it possible to configure this dropdown form to contain the columns/fields necessary to fully describe the new record?
2. If so, can this be done in the control's designer? If so, how?
3. Is it possible to validate user entry into the fields in the add new record dropdown form? If so, please describe in detail the steps I need to take to accomplish this.
4. Is it possible to configure validation in the designer for the RadGrid control?
Space limitations dictate that there is no room in the grid for additional columns, such as Edit and Delete. Therefore, I assume I need to configure a CommandItemTemplate which adds new buttons to the toolbar above the grid. I have done this.
1. Is it possible to code the custom buttons to behave precisely as when clicking the built-in edit and delete columns?
2. If so, please describe the exact steps I need to take to effect this. As before, please describe if and how the control designer may be used to do this. For example code, please note that I use VB.Net.
Visibility of the buttons:
I used Example 1 from http://docs.telerik.com/devtools/aspnet-ajax/controls/grid/data-editing/commanditem/command-item-template#custom-commanditemtemplate. I fail to see a good reason for the Edit and Delete buttons being visible unless one or more rows is selected in the grid. If there is a good reason for this, please let me know. Is it simply a matter of preference?
1. Please describe how I may control button visiblity based upon the count of selected rows in the grid.
I note that the Delete button from the sample includes
CommandName="DeleteSelected". When I select a row and click the button,
the record is not deleted. The grid is bound to a SqlDataSource. I assume that the delete command would remove the selected record(s) from the datasource, then effect an Update against the database.
1. How is basic CRUD done when using custom buttons in the toolbar?
2. How is basic CRUD done when using the built-in command columns?
I note that a RadGrid contains one or more views. I also note that, in the designer, there are some identical options for both the Grid and the MasterTableView. It seems that one must at times make use of the options associated with the Grid and, at other times, make use of those associated with the MasterTableView.
1. How am I supposed to know which of the duplicate options to use? Which one actually effects the desired behavior?
2. Is my perception correct that the use of these options in the designer is inconsistently applied?
Thank you.
13 answers
1.9K+ views
Hi All
I'm getting the following error:
"Selection out of range Parameter name:"
I know what is causing the error - I'm using simple data binding, and the value I'm binding to the ComboBox doesn't exist in its list of values. I'm looking for a way to work around this, because it's always possible that someone has changed a value in the database to one that doesn't exist in the ComboBox.
I've read that setting AllowCustomText="true" will allow values to be entered that aren't currently in the list, however it still seems to crash if the value I'm binding doesn't exist in the datasource.
Ideally, the functionality I want is:
The list will auto-populate from the datasource.
If the value I bind to the ComboBox doesn't exist in the datasource, then that value is automatically added to ComboBox and can be selected like any other value.
The users can only select values from the list, I wouldn't want them to be able to enter any value they like (which is what I think AllowCustomText does).
Is there any way to do this?
I'm getting the following error:
"Selection out of range Parameter name:"
I know what is causing the error - I'm using simple data binding, and the value I'm binding to the ComboBox doesn't exist in its list of values. I'm looking for a way to work around this, because it's always possible that someone has changed a value in the database to one that doesn't exist in the ComboBox.
I've read that setting AllowCustomText="true" will allow values to be entered that aren't currently in the list, however it still seems to crash if the value I'm binding doesn't exist in the datasource.
Ideally, the functionality I want is:
The list will auto-populate from the datasource.
If the value I bind to the ComboBox doesn't exist in the datasource, then that value is automatically added to ComboBox and can be selected like any other value.
The users can only select values from the list, I wouldn't want them to be able to enter any value they like (which is what I think AllowCustomText does).
Is there any way to do this?
Serge Aranda
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answered
on
25 May 2017
1 answer
99 views
Is Telerik ASP.NET AJAX Q2 2011 SP1 compatible with Internet Explorer 11? My Telerik control events are not firing unless I put my browser in compatibility mode.
Thanks
TB
Dimitar
Telerik team
answered
on
25 May 2017
10 answers
1.3K+ views
I would like rto see a form builder component like the form builder in site finity that we could use for our sites. Does this exist?
Marin Bratanov
Telerik team
answered
on
25 May 2017
1 answer
125 views
I’ve noticed when I enable D&D on a list box in my app, certain
keyboard functions no longer work in the list box. For instance, the up and down arrows do not
change the selection, and pressing an alpha key does not move the selection
down to the first item starting with that letter. I also tested your List box demos. Everywhere D&D is enabled, the keyboard functions
I mentioned do not work.
I see no reason why D&D should disable those keyboard functions. Is this a known issue? Is this issue scheduled to be fixed in a future release?
I see no reason why D&D should disable those keyboard functions. Is this a known issue? Is this issue scheduled to be fixed in a future release?
Peter Milchev
Telerik team
answered
on
25 May 2017
0 answers
190 views
Hi,
if the column is a grid template column, how can I find the control that is inside the <Item Template> without actually knowing the name.
I know that id can get server side
foreach (GridColumn column in RadGrid1.Columns)
{
if (column.GetType().Name == "GridTemplateColumn")
{
foreach (GridDataItem item in RadGrid1.MasterTableView.Items)
{
foreach (Control control in item["IsTrue"].Controls)
{
string ColType = control.GetType().Name;
string Id = control.ID;
if (ColType.Equals("CheckBox"))
{
string value = ((CheckBox)(control)).Checked.ToString();
}
}
}
}
}
But How to write and get above code in the client side ?
Thank you in advance.
Narsa
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asked
on
25 May 2017
2 answers
406 views
Hi,
I would like to know how to implement client side validation on controls in edit mode of any row. LIke on clicking edit button we get the edit template dispalyed. Now let us say i have a text box which should take input as integer, if the user enters any value other integet i should give a error message. And this validation should happen on the client side itself may on text changed or on last focus and when the user clicks update button it should not allow the user to submit. Any help would be appreciated./
I would like to know how to implement client side validation on controls in edit mode of any row. LIke on clicking edit button we get the edit template dispalyed. Now let us say i have a text box which should take input as integer, if the user enters any value other integet i should give a error message. And this validation should happen on the client side itself may on text changed or on last focus and when the user clicks update button it should not allow the user to submit. Any help would be appreciated./
1 answer
140 views
I'm working with the RadGrid in Batch mode and I would like to be able to evaluate a cell's value and possibly modify it and write it back to the cell (from 4 to 4:00, for example). I've been trying to do this in the onBatchEditCellValueChanging event where I can easily read the new value but I have had no luck overriding it. Any help or javascript samples will be greatly appreciated.
