How to set selected value from Combobox

Question

I use combobox in c  windows form  I bound the item list as below   var employmentStatus   new BindingList lt KeyValuePair lt string  string gt  gt      employmentStatus Add new KeyValuePair lt string  string gt   0     Select Status      employmentStatus Add new KeyValuePair lt string  string gt   1    Contract     employmentStatus Add new KeyValuePair lt string  string gt   2    Part Time     employmentStatus Add new KeyValuePair lt string  string gt   3    Permanent     employmentStatus Add new KeyValuePair lt string  string gt   4    Probation      employmentStatus Add new KeyValuePair lt string  string gt   5    Other     cmbEmployeeStatus DataSource   employmentStatus  cmbEmployeeStatus ValueMember    Key   cmbEmployeeStatus DisplayMember    Value   cmbEmployeeStatus SelectedIndex   0    I save the selected value in database eg 1 or 2  Now I want to set selected value from database item like   cmbEmployeeStatus SelectedValue  employee employmentstatus         But combobox not selected with value  How can I do that

User · Answer

I suspect something is not right when you are saving to the db. Do i understand your steps as:

populate and bind
user selects and item, hit and save.. then you save in the db
now if you select another item it won't select?

got more code, especially when saving? where in your code are initializing and populating the bindinglist

User · Answer

In windows Appliation  we use like this   DDLChangeImpact SelectedIndex   DDLChangeImpact FindStringExact ds Tables 0  Rows 0   tmchgimp   ToString      DDLRequestType SelectedIndex   DDLRequestType FindStringExact ds Tables 0  Rows 0   rmtype   ToString

User · Answer

In order to do the database style ComboBoxes manually trying to setup a relationship between a number  internal  and some text  visible   I ve found you have to    Store you items in a list  You are close - except the string string - need int string  DataSource property to the list  You are good  DataMember DataValue  You are good  Load default value  You are good  Put in value from database  Your question  Get value to put back in database  Your next question    First things first   Change your KeyValuePair to  so it looks like    0  Select      1  Option 1    Now  when you run your sql  Select empstatus from employees where blah  and get back an integer  you need to set the combobox without wasting a bunch of time   Simply      SelectedVALUE - not Item       cmbEmployeeStatus SelectedValue   3      or  cmbEmployeeStatus SelectedValue   intResultFromQuery       This will work whether you have manually loaded the combobox with code values  as you did  or if you load the comboBox from a query   If your foreign keys are integers   which for what I do  they all are   life is easy   After the user makes the change to the comboBox  the value you will store in the database is SelectedValue   Cast to int as needed    Here is my code to set the ComboBox to the value from the database   if  t is DBInt    Typical for ComboBox stuff           cb SelectedValue     DBInt t  value          And to retrieve     DBInt t  value    int  cb SelectedValue    DBInt is a wrapper for an Integer  but this is part of my ORM that gives me manual control over databinding  and reduces code errors   Why did I answer this so late   I was struggling with this also  as there seems to be no good info on the web about how to do this   I figured it out  and thought I d be nice and post it for someone else to see

User · Answer

Try this one   cmbEmployeeStatus SelectedIndex   cmbEmployeeStatus FindString employee employmentstatus     Hope that helps

User · Answer

To set value in the ComboBox   cmbEmployeeStatus Text  Something

User · Answer

Try this   KeyValuePair lt string  string gt  pair    KeyValuePair lt string string gt  this ComboBox SelectedItem

User · Answer

A possible solution   cmbEmployeeStatus SelectedValue   cmbEmployeeStatus Items FindByText  text   Value

User · Answer

try this  combobox SelectedIndex   BindingSource Item 9  where  9   colum name 9 from table

User · Answer

Use the SelectedIndex property for the respective employee status in the combo box

User · Answer

cmbEmployeeStatus Text    text

User · Answer

Below will work in your case   cmbEmployeeStatus SelectedItem  employee employmentstatus    When you set the SelectedItem property to an object  the ComboBox attempts to make that object the currently selected one in the list  If the object is found in the list  it is displayed in the edit portion of the ComboBox and the SelectedIndex property is set to the corresponding index  If the object does not exist in the list  the SelectedIndex property is left at its current value   EDIT  I think setting the Selected Item as below is incorrect in your case   cmbEmployeeStatus SelectedItem    employee employmentstatus      Like below  var toBeSet   new KeyValuePair lt string  string gt   1    Contract    cmbEmployeeStatus SelectedItem   toBeSet    You should assign the correct name value pair

[c#] How to set selected value from Combobox?

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