CODEWITHSUNDEEP
winformsdevexpress
Guillermo Gutiérrez
Guillermo Gutiérrez

Reputation: 17799

DevExpress LookupEdit, Select by item

How to set selected element of DevExpress LookupEdit by item? I.e., given one object of the LookupEdit's datasource, set the selection of the LookupEdit based on it.

Upvotes: 1

Views: 23289

Answers (3)

Koeuy Chetra
Koeuy Chetra

Reputation: 15

Here is a simple solution for select first value index: LookUpEdit1.EditValue=TryCast(LookUpEdit1.Properties.DataSource,DataTable).Row(0).Item(0).ToString

Upvotes: 1

Guillermo Gutiérrez
Guillermo Gutiérrez

Reputation: 17799

After some time, I found the answer in the DevExpress forums. Just let the ValueMember property unassigned, and set the EditValue property of the control to the item to be selected. Taking @DmitryG example:

var dataSource = new List<Person>();
p1 = new Person(){ ID=0, Name="John", Age=27 };
dataSource.Add(p1);
//...
dataSource.Add(new Person(){ ID=101, Name="Mary", Age=23 });
lookupEdit1.Properties.DataSource = dataSource;
lookupEdit1.Properties.DisplayMember = "Name";
//...
lookupEdit1.EditValue = p1;

In this situation, it will be bound to the reference to an item.

Upvotes: 1

DmitryG
DmitryG

Reputation: 17850

You should set the LookupEdit.EditValue property with value from your data source according to LookupEdit.ValueMember property.

Here is the sample that demonstrated this approach:

var dataSource = new List<Person> { 
    new Person(){ ID=0, Name="John", Age=27 },
    //...
    new Person(){ ID=101, Name="Mary", Age=23 },
};
lookupEdit1.Properties.DataSource = dataSource;
lookupEdit1.Properties.DisplayMember = "Name";
lookupEdit1.Properties.ValueMember = "ID";

lookupEdit1.EditValue = 101; // Select Person with ID==101
//...
lookupEdit1.EditValue = lookupEdit1.Properties.GetDataSourceValue("ID", 1); // Select Person from second row by its ID

Upvotes: 4

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