How do I convert Booleans correctly?

Question

I am working on a project for user administration in ASP.NET Web App (Framework 4.8) and I thought my gridview would be more effective if I turned some columns that before was TextBoxes to CheckBoxes.

Now that I am going to it gives me: "String was not recognized as a valid Boolean." when I have converted the items. So what am I doing wrong converting these Booleans?

gvTestUsers_RowCommand

protected void gvTestUsers_RowCommand(object sender, GridViewCommandEventArgs e) { try { if (e.CommandName.Equals("AddNew")) { int tbl_users_key = 0; TextBox myTxt; CheckBox myCheck; myTxt = ((TextBox)gvTestUsers.FooterRow.FindControl("txtNamefooter")); string Name; Name = myTxt.Text; string CostCenter; myTxt = ((TextBox)gvTestUsers.FooterRow.FindControl("txtCostCenterfooter")); CostCenter = myTxt.Text; string Employee; myTxt = ((TextBox)gvTestUsers.FooterRow.FindControl("txtEmployeefooter")); Employee = myTxt.Text; Boolean FootPlate; myCheck = ((CheckBox)gvTestUsers.FooterRow.FindControl("CheckFootPlateFooter")); FootPlate = Convert.ToBoolean(myCheck.Text); Boolean WirstCord; myCheck = ((CheckBox)gvTestUsers.FooterRow.FindControl("CheckWirstCordFooter")); WirstCord = Convert.ToBoolean(myCheck.Text); Boolean Excluded; myCheck = ((CheckBox)gvTestUsers.FooterRow.FindControl("txtExcludedfooter")); Excluded = Convert.ToBoolean(myCheck.Text); string Comment; myTxt = ((TextBox)gvTestUsers.FooterRow.FindControl("txtCommentfooter")); Comment = myTxt.Text; string sMsg; sMsg = ""; bool btest = fcEditTBL_USERS(tbl_users_key, Name, CostCenter, Employee, FootPlate, WirstCord, Excluded, Comment, ref sMsg, 0); if (btest == false) { lblErrorMessage.Text = sMsg; lblSuccessMessage.Text = " "; return; } PopulateGridView(); lblSuccessMessage.Text = Name + " Was Added To Record."; } } catch (Exception ex) { lblSuccessMessage.Text = ""; lblErrorMessage.Text = ex.Message; } }

Checkboxes have a Property called Checked. this is already a boolean and returns the checked state of the checkbox — J. S. Garcia
– J. S. Garcia, Commented Oct 6, 2021 at 14:06

Albert D. Kallal · Accepted Answer · 2021-10-06 17:09:17Z

This:

Boolean FootPlate; myCheck = ((CheckBox)gvTestUsers.FooterRow.FindControl("CheckFootPlateFooter")); FootPlate = Convert.ToBoolean(myCheck.Text);

should be:

Boolean FootPlate; myCheck = ((CheckBox)gvTestUsers.FooterRow.FindControl("CheckFootPlateFooter")); FootPlate = myCheck.Checked;

You don't need to convert, (.Text is the text associated with the check box, not the true/false value if the box is checked or not) .

Thanks a lot, I understand it now. Great and simple explanation!

Malvik Bhavsar · Accepted Answer · 2021-10-06 13:51:44Z

As per your code following code is wrong.

Boolean Excluded; myCheck = ((CheckBox)gvTestUsers.FooterRow.FindControl("txtExcludedfooter")); Excluded = Convert.ToBoolean(myCheck.Text);

As per your id txtExcludedfooter, is this textbox value or the checkbox?

Need to correct this.

Thanks, yes it is supposed to be a checkbox. But it still do not want to pass the FootPlate, WirstCord or Excluded value

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