组合框选择值问题

Question

In my webpage I am using combobox & searchbutton.

When i select a value from combobox then i click the search button, the combobox first matching value is displaying

For Example

• combobox values are - 001, 002, 003
• When i select the value in the combobox -003
• Then i click the search button
• The page is refreshing and 001 values are displaying instead of 003

Code for Search Click button:

cmd2 = new OdbcCommand("Select * from table where id = '" + combobox1.Text + "' ", con);
ada2 = new OdbcDataAdapter(cmd2);
ds1 = new DataSet();
ada2.Fill(ds1);
gridview1.DataSource = ds1;
gridview1.DataBind();

How can I solve this issue?

Answer 1

Are you binding your gridview or combobox in your Page_Load method? I have a hunch this may be the issue. Make sure it looks like this:

void Page_Load(Object obj, EventArgs e)
{
  if (!IsPostBack){
     //do your stuff
  }
}

Answer 2

It could be just a typo but it looks like you are selecting the combobox text and not the selectedvalue of the combo box. Is that correct?

Answer 3

您是否尝试过combobox1.SelectedItem.ToString() ？