手机号码不以0验证开头 [英] Mobile Number does not start with 0 Validation

问题描述

手机号码textbox1。



该手机号码用户未输入以0开头的手机号码。



用于验证代码。

Mobile Number textbox1.

in that mobile Number user does not type the mobile number start with 0.

for that i validate the code.

if(txt_mobile.Text.StartsWith = 0)
{
Label6.Text = "Enter Correct Mobile Number";
 return;
}

i写上面的代码，但错误显示如下;



无法分配给''StartsWith''因为它是''方法组''。



来自我的上面代码是什么错误。

i written the above code but error shows as follows;

Cannot assign to ''StartsWith'' because it is a ''method group''.

from my above code what is the error.

推荐答案

您好，我强烈建议您检查字符串的开头是否有空行



因此

Hi , i strongly recommend to you to check if there is any empty line in the beginin of the string

so as a result

if(txt_mobile.Text.TrimStart().StartsWith("0"))
{
Label6.Text = "Enter Correct Mobile Number";
return false;
}

if(txt_mobile.Text.StartsWith("0"))
{
Label6.Text = "Enter Correct Mobile Number";
return false;
}

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