retrieving radioButton value from SQL Server using C#

Question

5.00/5 (1 vote)

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Hello!
I'm trying to retrieve a radioButton value from database from SQL Server Compact
But my code doesn't work.. what is wrong?
thanks

C#

if (con.State != ConnectionState.Open)
    con.Open();

Boolean genderval = false;
SqlCeCommand gendercmnd = new SqlCeCommand(@"SELECT Gender FROM Std_info WHERE Std_id='" + TextBox1.Text + "'", con);
genderval = Convert.ToBoolean(gendercmnd);
            if (genderval == true)
                Convert.ToBoolean(radioButton1.Checked);
            else
                Convert.ToBoolean(radioButton2.Checked);  
con.Close();

Posted 24-Nov-13 20:48pm

Member 10417511

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2 solutions

Solution 1

If you are getting True or False value in genderval variable then assign value directly to the radio button like given below -

C#

if(genderval==true)
{
radioButton1.Checked=genderval;
}

Posted 24-Nov-13 21:22pm

Madhu Nair

Comments

Member 10417511 25-Nov-13 17:55pm

I tried but the same error message shows at line: genderval = Convert.ToBoolean(gendercmnd);
error:{"Unable to cast object of type 'System.Data.SqlServerCe.SqlCeCommand' to type 'System.IConvertible'."}

Madhu Nair 26-Nov-13 5:24am

You are not executing your command object and you are directly trying to access the columns from the command object. It is not possible. Assign the command object execution to datareader using ExecuteReader()Method and access the value from the data reader.

Refer this link http://www.akadia.com/services/dotnet_data_reader.html for more info on using Data Reader

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Member 10417511 · Accepted Answer · 2013-11-27T09:04:00

It is solved..!

C#

//........ retrieving radioButton value ....... 

if (conn.State != ConnectionState.Open) 
    conn.Open(); 
try { 
      Boolean genderval = SqlCeCommand gendercmnd = new SqlCeCommand(@"SELECT Gender FROM Std_Info     WHERE Std_id='" + TextBox1.Text + "'", con); 

genderval = (Boolean)gendercmnd.ExecuteScalar(); 
if (genderval == true) 
    Convert.ToBoolean(radioButton1.Checked=true); 
else 
    Convert.ToBoolean(radioButton2.Checked = true); 
conn.Close(); 
} 
catch (Exception ex)
       {
             MessageBox.Show(ex.Message);
       }