How to resolve "Unable to cast object of type system.data.datarowview to typ system.iconvertible.index"?

Question

1.00/5 (1 vote)

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Unable to cast object of type system.data.datarowview to typ system.iconvertible:

C#

public void Bind()
{
    try
    {
        string query = @"select ProductMaster.id,ProductMaster.pName,ProductDetails.Modelno,ProductDetails.Price,ProductDetails.Quantity from ProductMaster, ProductDetails";
        sda = new SqlDataAdapter(query, conn);
        dt = new DataTable();
        sda.Fill(dt);
        if (dt.Rows.Count > 0)
        {
            dataGridView1.DataSource = dt;
        }
        dataGridView1.Columns[0].Visible = false;//here i got an error(index out of bound)
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}

Posted 23-Apr-15 22:27pm

Member 11057488

Updated 23-Apr-15 23:16pm

Leo Chapiro

v3

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Comments

Leo Chapiro 24-Apr-15 5:19am

I don't think that the error comes from here: dataGridView1.Columns[0].Visible = false;
Please check twice by debugiing!

Member 11057488 24-Apr-15 5:34am

private void button1_Click(object sender, EventArgs e)
{

try
{
conn.Open();

cmd = new SqlCommand(@"INSERT INTO [pix].[dbo].[ProductDetails] ([ProductID],[Modelno],[Price],[Quantity]) VALUES ('" + Convert.ToInt32(comboBox1.SelectedItem) + "','" + textBox1.Text + "','" + textBox2.Text + "','" + textBox3.Text + "')", conn);// here i got this error unable to cast object of type system.data.datarowview to typ system.iconvertible
int i = 0;
i = cmd.ExecuteNonQuery();
if (i > 0)
{
MessageBox.Show("Rows inserted successfully");
}
else
{
MessageBox.Show("No rows inserted");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
conn.Close();
}
finally
{
conn.Close();
Bind();
}
cleardata();

}

Leo Chapiro 24-Apr-15 5:37am

What is that now? Another one issue or the same one?

Member 11057488 24-Apr-15 5:43am

same issue actually unable to cast the oject error is thown on this code and in the first code the exception thrown is index out of bound

aarif moh shaikh 24-Apr-15 6:19am

use comboBox1.SelectedItem.text

Member 11057488 24-Apr-15 6:24am

thank you

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