How to check if all Textbox is empty in on click and input thier errorProvider msg?
1
I want to check if any textbox is empty on btn click and then display their corresponding SetError msg on their side
bool isIncomplete = false;
foreach (Control control in this.Controls)
{
if (control is TextBox)
{
TextBox tb = control as TextBox;
if (string.IsNullOrWhiteSpace(tb.Text))
{
isIncomplete = true;
break;
}
}
} // I think this.controls does not work properly..
if (isIncomplete)
{
errorProvider1.SetError(firstname_txtbox, "First Name is required.");
errorProvider2.SetError(lastname_txtbox, "Last Name is required.");
MessageBox.Show("Please fill all the textbox correctly!");
return;
} else if(firstname_txtbox.Text.Length < 2)
{
errorProvider1.SetError(firstname_txtbox, "First Name need to be at least 2 characters"); //this error message does appear through...
}else if() { etc..
The errorProvider message arent being dispalyed on click.
My textboxes are inside a Panel...
c# winforms textbox errorprovider
edited Nov 27 '18 at 9:28
Mong Zhu
15.3k52348
asked Nov 27 '18 at 9:00
Emanula SohnEmanula Sohn
275
add a comment |
1
I want to check if any textbox is empty on btn click and then display their corresponding SetError msg on their side
bool isIncomplete = false;
foreach (Control control in this.Controls)
{
if (control is TextBox)
{
TextBox tb = control as TextBox;
if (string.IsNullOrWhiteSpace(tb.Text))
{
isIncomplete = true;
break;
}
}
} // I think this.controls does not work properly..
if (isIncomplete)
{
errorProvider1.SetError(firstname_txtbox, "First Name is required.");
errorProvider2.SetError(lastname_txtbox, "Last Name is required.");
MessageBox.Show("Please fill all the textbox correctly!");
return;
} else if(firstname_txtbox.Text.Length < 2)
{
errorProvider1.SetError(firstname_txtbox, "First Name need to be at least 2 characters"); //this error message does appear through...
}else if() { etc..
The errorProvider message arent being dispalyed on click.
My textboxes are inside a Panel...
c# winforms textbox errorprovider
edited Nov 27 '18 at 9:28
Mong Zhu
15.3k52348
asked Nov 27 '18 at 9:00
Emanula SohnEmanula Sohn
275
1
you need to iterate through the controls of the panel and not of the form. One shortcut:this.panel1.Controls.OfType<TextBox>()will return only the textboxes
– Mong Zhu
Nov 27 '18 at 9:26
thanks, i think its working
– Emanula Sohn
Nov 27 '18 at 9:41
stackoverflow.com/a/33080822/3110834
– Reza Aghaei
Nov 27 '18 at 9:44
stackoverflow.com/a/46129052/3110834
– Reza Aghaei
Nov 27 '18 at 9:45
add a comment |
1
1
1
I want to check if any textbox is empty on btn click and then display their corresponding SetError msg on their side
bool isIncomplete = false;
foreach (Control control in this.Controls)
{
if (control is TextBox)
{
TextBox tb = control as TextBox;
if (string.IsNullOrWhiteSpace(tb.Text))
{
isIncomplete = true;
break;
}
}
} // I think this.controls does not work properly..
if (isIncomplete)
{
errorProvider1.SetError(firstname_txtbox, "First Name is required.");
errorProvider2.SetError(lastname_txtbox, "Last Name is required.");
MessageBox.Show("Please fill all the textbox correctly!");
return;
} else if(firstname_txtbox.Text.Length < 2)
{
errorProvider1.SetError(firstname_txtbox, "First Name need to be at least 2 characters"); //this error message does appear through...
}else if() { etc..
The errorProvider message arent being dispalyed on click.
My textboxes are inside a Panel...
c# winforms textbox errorprovider
edited Nov 27 '18 at 9:28
Mong Zhu
15.3k52348
asked Nov 27 '18 at 9:00
Emanula SohnEmanula Sohn
275
I want to check if any textbox is empty on btn click and then display their corresponding SetError msg on their side
bool isIncomplete = false;
foreach (Control control in this.Controls)
{
if (control is TextBox)
{
TextBox tb = control as TextBox;
if (string.IsNullOrWhiteSpace(tb.Text))
{
isIncomplete = true;
break;
}
}
} // I think this.controls does not work properly..
if (isIncomplete)
{
errorProvider1.SetError(firstname_txtbox, "First Name is required.");
errorProvider2.SetError(lastname_txtbox, "Last Name is required.");
MessageBox.Show("Please fill all the textbox correctly!");
return;
} else if(firstname_txtbox.Text.Length < 2)
{
errorProvider1.SetError(firstname_txtbox, "First Name need to be at least 2 characters"); //this error message does appear through...
}else if() { etc..
The errorProvider message arent being dispalyed on click.
My textboxes are inside a Panel...
c# winforms textbox errorprovider
c# winforms textbox errorprovider
edited Nov 27 '18 at 9:28
Mong Zhu
15.3k52348
asked Nov 27 '18 at 9:00
Emanula SohnEmanula Sohn
275
edited Nov 27 '18 at 9:28
Mong Zhu
15.3k52348
asked Nov 27 '18 at 9:00
Emanula SohnEmanula Sohn
275
edited Nov 27 '18 at 9:28
Mong Zhu
15.3k52348
edited Nov 27 '18 at 9:28
Mong Zhu
15.3k52348
edited Nov 27 '18 at 9:28
Mong Zhu
15.3k52348
15.3k52348
asked Nov 27 '18 at 9:00
Emanula SohnEmanula Sohn
275
asked Nov 27 '18 at 9:00
Emanula SohnEmanula Sohn
275
asked Nov 27 '18 at 9:00
Emanula SohnEmanula Sohn
275
275
1
you need to iterate through the controls of the panel and not of the form. One shortcut:this.panel1.Controls.OfType<TextBox>()will return only the textboxes
– Mong Zhu
Nov 27 '18 at 9:26
thanks, i think its working
– Emanula Sohn
Nov 27 '18 at 9:41
stackoverflow.com/a/33080822/3110834
– Reza Aghaei
Nov 27 '18 at 9:44
stackoverflow.com/a/46129052/3110834
– Reza Aghaei
Nov 27 '18 at 9:45
add a comment |
1
you need to iterate through the controls of the panel and not of the form. One shortcut:this.panel1.Controls.OfType<TextBox>()will return only the textboxes
– Mong Zhu
Nov 27 '18 at 9:26
thanks, i think its working
– Emanula Sohn
Nov 27 '18 at 9:41
stackoverflow.com/a/33080822/3110834
– Reza Aghaei
Nov 27 '18 at 9:44
stackoverflow.com/a/46129052/3110834
– Reza Aghaei
Nov 27 '18 at 9:45
1
1
you need to iterate through the controls of the panel and not of the form. One shortcut:
this.panel1.Controls.OfType<TextBox>() will return only the textboxes– Mong Zhu
Nov 27 '18 at 9:26
you need to iterate through the controls of the panel and not of the form. One shortcut:
this.panel1.Controls.OfType<TextBox>() will return only the textboxes– Mong Zhu
Nov 27 '18 at 9:26
thanks, i think its working
– Emanula Sohn
Nov 27 '18 at 9:41
thanks, i think its working
– Emanula Sohn
Nov 27 '18 at 9:41
stackoverflow.com/a/33080822/3110834
– Reza Aghaei
Nov 27 '18 at 9:44
stackoverflow.com/a/33080822/3110834
– Reza Aghaei
Nov 27 '18 at 9:44
stackoverflow.com/a/46129052/3110834
– Reza Aghaei
Nov 27 '18 at 9:45
stackoverflow.com/a/46129052/3110834
– Reza Aghaei
Nov 27 '18 at 9:45
add a comment |
1 Answer
1
active
oldest
votes
0
use String.IsNullOrEmpty(String)
to check if a control is empty.
private void button1_Click(object sender, EventArgs e)
{
if (String.IsNullOrEmpty(textBox1.Text))
{
MessageBox.Show("Please fill all the textbox correctly!");
}
else
{
MessageBox.Show("Not empty");
}
}
answered Nov 27 '18 at 13:02
JosephJoseph
14
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
use String.IsNullOrEmpty(String)
to check if a control is empty.
private void button1_Click(object sender, EventArgs e)
{
if (String.IsNullOrEmpty(textBox1.Text))
{
MessageBox.Show("Please fill all the textbox correctly!");
}
else
{
MessageBox.Show("Not empty");
}
}
answered Nov 27 '18 at 13:02
JosephJoseph
14
add a comment |
0
use String.IsNullOrEmpty(String)
to check if a control is empty.
private void button1_Click(object sender, EventArgs e)
{
if (String.IsNullOrEmpty(textBox1.Text))
{
MessageBox.Show("Please fill all the textbox correctly!");
}
else
{
MessageBox.Show("Not empty");
}
}
answered Nov 27 '18 at 13:02
JosephJoseph
14
add a comment |
0
0
0
use String.IsNullOrEmpty(String)
to check if a control is empty.
private void button1_Click(object sender, EventArgs e)
{
if (String.IsNullOrEmpty(textBox1.Text))
{
MessageBox.Show("Please fill all the textbox correctly!");
}
else
{
MessageBox.Show("Not empty");
}
}
answered Nov 27 '18 at 13:02
JosephJoseph
14
use String.IsNullOrEmpty(String)
to check if a control is empty.
private void button1_Click(object sender, EventArgs e)
{
if (String.IsNullOrEmpty(textBox1.Text))
{
MessageBox.Show("Please fill all the textbox correctly!");
}
else
{
MessageBox.Show("Not empty");
}
}
answered Nov 27 '18 at 13:02
JosephJoseph
14
answered Nov 27 '18 at 13:02
JosephJoseph
14
answered Nov 27 '18 at 13:02
JosephJoseph
14
answered Nov 27 '18 at 13:02
JosephJoseph
14
14
add a comment |
add a comment |
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1
you need to iterate through the controls of the panel and not of the form. One shortcut:
this.panel1.Controls.OfType<TextBox>()will return only the textboxes– Mong Zhu
Nov 27 '18 at 9:26
thanks, i think its working
– Emanula Sohn
Nov 27 '18 at 9:41
stackoverflow.com/a/33080822/3110834
– Reza Aghaei
Nov 27 '18 at 9:44
stackoverflow.com/a/46129052/3110834
– Reza Aghaei
Nov 27 '18 at 9:45