//限制输入不能为中文和全角
private
void
zhbh_KeyPress(
object
sender,
KeyPressEventArgs
e)
{
int
chfrom =
Convert
.ToInt32(
"4e00"
, 16);
//范围（0x4e00～0x9fa5）转换成int（chfrom～chend）
int
chend =
Convert
.ToInt32(
"9fa5"
, 16);
if
(e.KeyChar >= (
Char
)chfrom && e.KeyChar <= (
Char
)chend)
{
e.Handled =
true
;
}
if
(e.KeyChar >= (
Char
)65281 & (
int
)e.KeyChar <= (
Char
)65374)
{
e.Handled =
true
;
}
}
//*******以下方法需在文本框的KeyPress方法下调用
//限制输入只能为数字
private
void
wz_qsh_KeyPress(
object
sender,
KeyPressEventArgs
e)
{
if
(!(
Char
.IsNumber(e.KeyChar)) && e.KeyChar != (
Char
)8)
{
e.Handled =
true
;
}
}
/**
* 限制只能输入数字和小数点
* */
public
void
validationOnlyFloat(
KeyPressEventArgs
e,
TextBox
t)
{
if
(((
int
)e.KeyChar < 48 || (
int
)e.KeyChar > 57) && (
int
)e.KeyChar != 8 && (
int
)e.KeyChar != 46)
e.Handled =
true
;
//小数点的处理。
if
((
int
)e.KeyChar == 46)
//小数点
{
if
(t.Text.Length <= 0)
e.Handled =
true
;
//小数点不能在第一位
else
{
float
f;
float
oldf;
bool
b1 =
false
, b2 =
false
;
b1 =
float
.TryParse(t.Text,
out
oldf);
b2 =
float
.TryParse(t.Text + e.KeyChar.ToString(),
out
f);
if
(b2 ==
false
)
{
if
(b1 ==
true
)
e.Handled =
true
;
else
e.Handled =
false
;
}
}
}
}