load combobox from xml [modified]
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Well, as you guessed, posting relevant code will be helpful. BTW your
XMLfile doesn't seem very elegant, for instance, in:<Days>21,"21"</Days>you enclose two pieces of info inside a single item. Maybe it is not a good idea. :)If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
xtr = new XmlTextReader(filename); while (xtr.Read()) { if (xtr.NodeType == XmlNodeType.Element) { if (xtr.LocalName.Equals("Days")) { this.cbodays.Items.Add(xtr.Value); } } } the 21,"21" was just test data, I was trying to use the 20 but that gave me just the blank drop down box, so i was wondering if it just took my numbers and made them the index of the combobox so I put a few different data formats in the XML file to see if that made any difference I have used a switch statement to check for XmlNodeType.Element and gives same results, if I change .equals("days") to an name that is not in the file I just get one blank drop down, currently it looks like it see that there are the right number of records but no data in the drop down Rob
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xtr = new XmlTextReader(filename); while (xtr.Read()) { if (xtr.NodeType == XmlNodeType.Element) { if (xtr.LocalName.Equals("Days")) { this.cbodays.Items.Add(xtr.Value); } } } the 21,"21" was just test data, I was trying to use the 20 but that gave me just the blank drop down box, so i was wondering if it just took my numbers and made them the index of the combobox so I put a few different data formats in the XML file to see if that made any difference I have used a switch statement to check for XmlNodeType.Element and gives same results, if I change .equals("days") to an name that is not in the file I just get one blank drop down, currently it looks like it see that there are the right number of records but no data in the drop down Rob
Planker wrote:
this.cbodays.Items.Add(xtr.Value);
Substitute
xtr.Valuewithxtr.ReadElementString()in the above line. :)If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
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Planker wrote:
this.cbodays.Items.Add(xtr.Value);
Substitute
xtr.Valuewithxtr.ReadElementString()in the above line. :)If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
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Thank you, that worked. is there a reason that xtr.Value works for text boxes and you need readelementstring for combobox?
No, there isn't. I think that
xtr.Valuedoesn't work for text boxes too. But I must test it...tomorrow...maybe!If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
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No, there isn't. I think that
xtr.Valuedoesn't work for text boxes too. But I must test it...tomorrow...maybe!If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
thank you for your help, wondering if you could answer a question about writing back to the xml file. I think you are right, I looked at my other code again and i was using ReadString I am getting an error at run time on this line of code newDayIndex.InnerXml = index.ToString(); here is how i'm doing all the xml code XmlTextReader reader = new XmlTextReader(C_strFileName); XmlDocument doc = new XmlDocument(); doc.Load(reader); reader.Close(); XmlNode oldIndex; XmlElement root = doc.DocumentElement; oldIndex = root.SelectSingleNode("/config/Days_Index"); XmlElement newDayIndex = doc.CreateElement("Days_Index"); newDayIndex.InnerXml = index.ToString(); root.ReplaceChild(newDayIndex, oldIndex); doc.Save(C_strFileName);
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I am trying to load a list of number in a combobox, it seems to be reading the xml file elements but it is reading my numbers as the index for the combobox here is my xml file data that is is reading 21, "21" 20, "20" 19 19 18 17 16 15 14 13 12 11 10 all i get is a blank drop down list, if you want to see the code let me know but the code is working to read the other elements and filling text boxes -- modified at 9:53 Saturday 5th May, 2007
- You should first correct these: 21, "21" 20, "20" 2) Then check if it you are really reading the values from the XML file correctly. 3) Use Convert.ChangeType(...) to convert the values you read to a specific type if you want. 4) Update ComboBox.DataSource Property with the list of values you read ( check out MSDN Library for ComboBox.DataSource Property on how to add specific, custom data sources to ComboBox ) Hope this helps...
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- You should first correct these: 21, "21" 20, "20" 2) Then check if it you are really reading the values from the XML file correctly. 3) Use Convert.ChangeType(...) to convert the values you read to a specific type if you want. 4) Update ComboBox.DataSource Property with the list of values you read ( check out MSDN Library for ComboBox.DataSource Property on how to add specific, custom data sources to ComboBox ) Hope this helps...
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Thanks for the info, i got the loading of the combobox working, i am not trying to figure out how to save the changes back to the xml file if the user changes the value.
I know that you are not trying to save back the user modified values to the XML file. What I suggest using Convert is to give you the ability to store the datatype of the object(what ever you create) as a string value and then convert it to what you want. You may also write a custom type converter or implement iSerializable interface or add XmlAttributes to your fields for which you want to serialize.
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I know that you are not trying to save back the user modified values to the XML file. What I suggest using Convert is to give you the ability to store the datatype of the object(what ever you create) as a string value and then convert it to what you want. You may also write a custom type converter or implement iSerializable interface or add XmlAttributes to your fields for which you want to serialize.
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yes I am trying to save back the user modified values. I'm updating a config file so when the program is shutdown the changed value is read the next time the program is run.
Do you know what you want? This is your post: Thanks for the info, i got the loading of the combobox working, i am not trying to figure out how to save the changes back to the xml file if the user changes the value. And now you are saying: yes I am trying to save back the user modified values. I'm updating a config file so when the program is shutdown the changed value is read the next time the program is run. Are you OK?