problem with combobox

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i want to fetch name list in combobox but at the time of fetching i want to add select word in the combo before showing the name list.plz help me?

Posted 25-Feb-14 17:54pm

Member 9027346

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Tom Marvolo Riddle · Answer 1 · 2014-02-25T17:57:00

Solution 1

Try this:

C#

//After binding
comboBox1.Items.Insert(0, "Select");
comboBox1.SelectedIndex = 0;

Posted 25-Feb-14 17:57pm

Tom Marvolo Riddle

Updated 25-Feb-14 17:58pm

v2

Comments

Member 9027346 26-Feb-14 0:20am

it gives error-Item collection can not be modified when the database property is set.

Tom Marvolo Riddle 26-Feb-14 0:23am

post your code .I'll check it and let you know

Member 9027346 26-Feb-14 0:28am

cmbplant.DisplayMember = dt.Columns["PlantName"].ToString();
cmbplant.ValueMember = dt.Columns["PlantId"].ToString();
cmbplant.DataSource = dt;
cmbplant.Items.Insert(0, "Select");
cmbplant.SelectedIndex = 0;

Tom Marvolo Riddle 26-Feb-14 1:06am

As the error says the database property is already set. you have to create a new row and add it or get it in the query

Tom Marvolo Riddle 26-Feb-14 1:20am

see this:
http://stackoverflow.com/questions/5134294/exception-items-collection-cannot-be-modified-when-the-datasource-property-is[^]

Krunal Rohit · Answer 2 · 2014-02-25T18:08:00

Solution 3

This would work for you :)

C#

ComboBox1.Items.Insert(0, "Select Items");
ComboBox1.SelectedIndex = 0;

-KR

Posted 25-Feb-14 18:08pm

Krunal Rohit

Comments

King Fisher 26-Feb-14 0:25am

solution 1==solution3

King Fisher · Answer 3 · 2014-02-25T18:03:00

Solution 2

if you want need to add  "select" value,then you'll need to manually add  "select" item to your data source and set that as the default item.

Posted 25-Feb-14 18:03pm

King Fisher

sandip1711 · Answer 4 · 2014-02-25T18:51:00

Solution 4

Insert Method use to add element with specifying index

SQL

ComboBox1.Items.Insert(0, "Select Items");
ComboBox1.SelectedIndex = 0;

Posted 25-Feb-14 18:51pm

sandip1711

george4986 · Answer 5 · 2014-02-25T20:10:00

Solution 5

try and simplify this code

C#

ComboBox obj =  (ComboBox)comboBox1;
DataTable dt1 = (DataTable)obj.DataSource;
DataTable dt2=dt1.Copy();
dt1.Clear();
DataRow dr = dt1.NewRow();
dr[1] = "select word";
dr[0] = 0;
dt1.Rows.Add(dr);
dt1.Merge(dt2);

Posted 25-Feb-14 20:10pm

george4986