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How can I have my combobox display nothing when my form loads? Currently when it loads it shows an item from the table it is bound too. I want the combobox to be blank/empty then the user can select what to pick. Currently there is only 1 item in the combobox. Does that have any effect? I tried to edit the combo and add a blank item but it is in the drop down but not selected.
Thank You
Thank You
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Hello jerry,
Thank you for your question. You simply need to set the SelectedIndex of your combo to -1 in the Form.Shown event. Please write again if you have other questions.
Sincerely yours,
Victor
the Telerik team
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Thank you for your question. You simply need to set the SelectedIndex of your combo to -1 in the Form.Shown event. Please write again if you have other questions.
Sincerely yours,
Victor
the Telerik team
Instantly find answers to your questions on the new Telerik Support Portal.
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jerry
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answered on 28 Jan 2010, 01:39 PM
Victor,
Thank you for your quick response. I tried that and it still didn't work.
This is my code
But this still shows up with the value returned from my databinding and not the blank text RadComboBoxItem I added through the control.
Thank You
Thank you for your quick response. I tried that and it still didn't work.
This is my code
| DataTable dt = new DataTable(); |
| dt = ds.Tables[0]; |
| cmbPrj.DisplayMember = "project"; |
| cmbPrj.ValueMember = "id"; |
| cmbPrj.DataSource = dt; |
| cmbPrj.SelectedIndex = -1; |
Thank You
0
Hi jerry,
Thank you for your question. Are you executing this code in the Form.Shown event handler? I am looking forward to your reply.
Greetings,
Victor
the Telerik team
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Thank you for your question. Are you executing this code in the Form.Shown event handler? I am looking forward to your reply.
Greetings,
Victor
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jerry
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answered on 28 Jan 2010, 04:28 PM
Victor,
That was it. I had it in a different event. I thought I double checked that.
Thank you so much
That was it. I had it in a different event. I thought I double checked that.
Thank you so much
0
Hello jerry,
No problem, you only have to set SelectedIndex to -1 in Form.Shown, the other code can stay where it is. If you have more questions we are ready to assist you.
Greetings,
Victor
the Telerik team
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No problem, you only have to set SelectedIndex to -1 in Form.Shown, the other code can stay where it is. If you have more questions we are ready to assist you.
Greetings,
Victor
the Telerik team
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jerry
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answered on 29 Jan 2010, 03:30 PM
Victor,
I ran into another problem with the control we are discussing in this thread.
I created the SelectedIndexChanged event for that combobox. When the user changes this combo I need to save the value into a global variable. My problem is when I load my app and bind my data to that combo the SelectedIndexChanged event fires for each row. When I set SelectedIndex to -1 in Form.Shown it fires the event again then I get a "Object reference not set to an instance of an object". I hit "OK" then my app closes. If I comment out SelectedIndex to -1 in Form.Shown I don't get the error. I'm not sure why i'm having a difficult time creating a combobox and store it's value.
Thank you for any help
Jerry
I ran into another problem with the control we are discussing in this thread.
I created the SelectedIndexChanged event for that combobox. When the user changes this combo I need to save the value into a global variable. My problem is when I load my app and bind my data to that combo the SelectedIndexChanged event fires for each row. When I set SelectedIndex to -1 in Form.Shown it fires the event again then I get a "Object reference not set to an instance of an object". I hit "OK" then my app closes. If I comment out SelectedIndex to -1 in Form.Shown I don't get the error. I'm not sure why i'm having a difficult time creating a combobox and store it's value.
Thank you for any help
Jerry
0
Hi jerry,
Please post the code that is causing you trouble. This way I will able to provide a specific answer. If possible please send a sample application which reproduces the exception. I am looking forward to your reply.
Best wishes,
Victor
the Telerik team
Instantly find answers to your questions on the new Telerik Support Portal.
Watch a video on how to optimize your support resource searches and check out more tips on the blogs.
Please post the code that is causing you trouble. This way I will able to provide a specific answer. If possible please send a sample application which reproduces the exception. I am looking forward to your reply.
Best wishes,
Victor
the Telerik team
Instantly find answers to your questions on the new Telerik Support Portal.
Watch a video on how to optimize your support resource searches and check out more tips on the blogs.