Null value from checkbox [Resolved]

Posted by Chaithragm under C# on 1/2/2013 | Points: 10 | Views : 3961 | Status : [Member] | Replies : 8

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I am using check box to delete the selected files,here is code im using..
if i select the check box the selected file s deleting...
if i have not selected any checkbox and click the delete button it must show a message...(select file to delete) help me in doing this..

protected void delete_img_Click(object sender, ImageClickEventArgs e)
{

for (int i = 0; i < GridView1.Rows.Count; i++)
{

CheckBox cb = (CheckBox)GridView1.Rows[i].Cells[0].FindControl("ShowAddress");

if (cb != null)
{

if (cb.Checked)
{
string row_id = GridView1.DataKeys[i].Value.ToString();
delete_document(row_id);

}

}
}
this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Selecte Files deleted successfully!!!'); window.location.href = 'Edit.aspx';", true);
}

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Posted by: Ranjeet_8 on: 1/2/2013 [Member] [MVP] Gold | Points: 50

0	protected void delete_img_Click(object sender, ImageClickEventArgs e) { bool flag = false; foreach (GridViewRow GvRow in GridView1.Rows) { CheckBox cb = (CheckBox)GvRow.FindControl("ShowAddress"); // Bind your Unique_ID with HiddenField inside Gridview HiddenField hfRowID = (HiddenField)GvRow.FindControl("UniqueID"); if (cb != null) { if (cb.Checked) { string row_id = hfRowID.Value; delete_document(row_id); flag = true; } } } if (flag == true) this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Selected Files deleted successfully!!!'); window.location.href = 'Edit.aspx';", true); else this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Error Msg goes here!!!'); ", true); } Chaithragm, if this helps please login to Mark As Answer. \| Alert Moderator


        protected void delete_img_Click(object sender, ImageClickEventArgs e)

        {

            bool flag = false;

            foreach (GridViewRow GvRow in GridView1.Rows)

            {

                CheckBox cb = (CheckBox)GvRow.FindControl("ShowAddress");

                // Bind your Unique_ID with HiddenField inside Gridview

                HiddenField hfRowID = (HiddenField)GvRow.FindControl("UniqueID");

                if (cb != null)

                {

                    if (cb.Checked)

                    {

                        string row_id = hfRowID.Value;

                        delete_document(row_id);

                        flag = true;

                    }

                }

            }

            if (flag == true)

                this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Selected Files deleted successfully!!!'); window.location.href = 'Edit.aspx';", true);

            else

                this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Error Msg goes here!!!'); ", true);

        }

Chaithragm, if this helps please login to Mark As Answer. | Alert Moderator

Posted by: Ranjeet_8 on: 1/2/2013 [Member] [MVP] Gold | Points: 25

0	Try this protected void delete_img_Click(object sender, ImageClickEventArgs e) { foreach (GridViewRow GvRow in GridView1.Rows) { CheckBox cb = (CheckBox)GvRow.FindControl("ShowAddress"); // Bind your Unique_ID with HiddenField inside Gridview HiddenField hfRowID = (HiddenField)GvRow.FindControl("UniqueID"); if (cb != null) { if (cb.Checked) { string row_id = hfRowID.Value; delete_document(row_id); } } } this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Selecte Files deleted successfully!!!'); window.location.href = 'Edit.aspx';", true); } Please Mark As Answer if this helps you . Chaithragm, if this helps please login to Mark As Answer. \| Alert Moderator

Try this


protected void delete_img_Click(object sender, ImageClickEventArgs e)

{

    foreach (GridViewRow GvRow in GridView1.Rows)

    {

        CheckBox cb = (CheckBox)GvRow.FindControl("ShowAddress");

        // Bind your Unique_ID with HiddenField inside Gridview

        HiddenField hfRowID = (HiddenField)GvRow.FindControl("UniqueID");

        if (cb != null)

        {

            if (cb.Checked)

            {

                string row_id = hfRowID.Value;

                delete_document(row_id);

            }

        }

    }

    this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Selecte Files deleted successfully!!!'); window.location.href = 'Edit.aspx';", true);        

}

Please Mark As Answer if this helps you

.

Chaithragm, if this helps please login to Mark As Answer. | Alert Moderator

Posted by: Chaithragm on: 1/2/2013 [Member] Starter | Points: 25

0	where to display the message Chaithragm, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Ranjeet_8 on: 1/2/2013 [Member] [MVP] Gold | Points: 25

0	after the end of foreach loop you can display d msg alert Please Mark As Answer if this helps you . Chaithragm, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Chaithragm on: 1/2/2013 [Member] Starter | Points: 25

0	that is sucess message displaying after foreach loop Chaithragm, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Chaithragm on: 1/2/2013 [Member] Starter | Points: 25

0	thank you ranjeet.. Chaithragm, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Ankitsrist on: 1/3/2013 [Member] Starter | Points: 25

0	hello will u please tell me wat is the use of of "delete_document" Chaithragm, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Chaithragm on: 1/4/2013 [Member] Starter | Points: 25

0	delete_document(row_id) This method is for deleting a a file from the table. Chaithragm, if this helps please login to Mark As Answer. \| Alert Moderator

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