getting value from database in numericupdown control (help me)

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C#

UGIcon.Open();
            cmd = new SqlCommand("select * from purchase where cm='" + toolStripTextBox1.Text + "'", UGIcon);
            SqlDataReader dr = cmd.ExecuteReader();
            if (dr.Read())
            {
               first 4 lines fetching data from database while executing but in numericupdown it showing error 
                textBox1.Text = dr["cm"].ToString();
                textBox2.Text = dr["om"].ToString();
                textBox3.Text = dr["address"].ToString();
                maskedTextBox1.Text = dr["phone"].ToString();

               numericUpDown1.Value = dr["baleq"].ToString();
            } 
            UGIcon.Close();

Posted 1-Jan-13 3:18am

selva_1990

Updated 1-Jan-13 4:06am

v4

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Comments

Kiran Susarla 1-Jan-13 9:56am

So what is the problem here?

selva_1990 1-Jan-13 9:58am

numericUpDown1.Value = dr["baleq"].ToString(); in this line Cannot implicitly convert type 'string' to 'decimal'

2 solutions

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Kiran Susarla · Accepted Answer · 2013-01-01T04:12:00

this is because your numericUpDown control's value property is expecting an decimal type value and you are passing a string.
You can use Convert.ToDecimal or Decimal.TryParse, convert the string value to decimal and assign it.
Something like this:

C#

 decimal number;
 UGIcon.Open();
......
 if (dr.Read())
 {
    .......

     if (Decimal.TryParse(dr["baleq"].ToString(), out number))
     {
        numericUpDown1.Value = number;
     }
 }
 UGIcon.Close();

Thomas Daniels · Accepted Answer · 2013-01-01T04:07:00

Solution 1

Hi,

The problem is here:

C#

numericUpDown1.Value = dr["baleq"].ToString();

Change it into:

C#

numericUpDown1.Value = Convert.ToDecimal(dr["baleq"]);

[EDIT]

Because the value isn't changing, try changing

C#

if (dr.Read())

into

C#

while (dr.Read());

Hope this helps.

Posted 1-Jan-13 4:07am

Thomas Daniels

Updated 1-Jan-13 4:14am

v2

Comments

selva_1990 1-Jan-13 10:11am

error gone but value not updating

Thomas Daniels 1-Jan-13 10:15am

I updated my answer.