Unable to cast object of type 'System.Web.UI.WebControls.Tex

Question

I am trying to update a template in a gridview but it gaves me this error: Unable to cast object of type 'System.Web.UI.WebControls.TextBox' to type 'System.IConvertible'. Below is my code behind. int rowIndex = ((GridViewRow)((LinkButton)e.CommandSource).NamingContainer).RowIndex; int id = Convert.ToInt32(e.CommandArgument); string option = ((TextBox)GridView1.Rows[rowIndex].FindControl( TextBox1 )).Text; string day = ((TextBox)GridView1.Rows[rowIndex].FindControl( TextBox2 )).Text; decimal netpremium = Convert.ToDecimal(((TextBox)GridView1.Rows[rowIndex].FindControl( TextBox3 ))); decimal vat = Convert.ToDecimal(((TextBox)GridView1.Rows[rowIndex].FindControl( TextBox4 ))); decimal registry = Convert.ToDecimal(((TextBox)GridView1.Rows[rowIndex].FindControl( TextBox5 ))); decimal totalpremium = Convert.ToDecimal(((TextBox)GridView1.Rows[rowIndex].FindControl( TextBox6 ))); TravelAssuranceDataAccess.UpdatePremium(id option day netpremium vat registry totalpremium); GridView1.EditIndex = -1; BindGridViewData(); Thanks in advance for any assistance.

Hold On · Answer

I finally got it. Code below: int rowIndex = ((GridViewRow)((LinkButton)e.CommandSource).NamingContainer).RowIndex; int id = Convert.ToInt32(e.CommandArgument); string option = ((TextBox)GridView1.Rows[rowIndex].FindControl( TextBox1 )).Text; string day = ((TextBox)GridView1.Rows[rowIndex].FindControl( TextBox2 )).Text; TextBox Netpremium = ((TextBox)GridView1.Rows[rowIndex].FindControl( TextBox3 )); decimal netpremium = Convert.ToDecimal(Netpremium.Text); TextBox Vat = ((TextBox)GridView1.Rows[rowIndex].FindControl( TextBox4 )); decimal vat = Convert.ToDecimal(Vat.Text); TextBox Registry = ((TextBox)GridView1.Rows[rowIndex].FindControl( TextBox5 )); decimal registry = Convert.ToDecimal(Registry.Text); TextBox Totalpremium = ((TextBox)GridView1.Rows[rowIndex].FindControl( TextBox6 )); decimal totalpremium = Convert.ToDecimal(Totalpremium.Text); TravelAssuranceDataAccess.UpdatePremium(id option day netpremium vat registry totalpremium); GridView1.EditIndex = -1; BindGridViewData();