如何前四个字母 [英] how to first four letters

问题描述

名字:TextBox1
姓氏:TextBox2
提交(按钮)
-------------------------------

我要显示名字或姓氏的前四个字母和下滚动(_)，计数应增加0001.插入新记录后计数应增加.
例如
名:Anil
姓氏:Singh
提交(按钮)

输出将显示Anil_0001

我希望显示它........

FirstName: TextBox1
LastName: TextBox2
Submit(Button)
-------------------------------

I want to display First four letters of firstname or lastname and underscroll(_) and count should be increase with 0001. after inserting new record count should be increase.
for example
FirstName: Anil
LastName: Singh
Submit(Button)

output will be shown Anil_0001

i want this should be displayed........

推荐答案

string firstName = "sudip";
        string lastName = "saha";

        Session["Count"] = 0;
        if (firstName.Length > 3)
        {
          int count=Convert.ToInt32(Session["Count"]);
            count++;
            Session["Count"] = count;
            str = firstName.Substring(0, 4);
            str = str + "_" + count.ToString().PadLeft(4, '0');
        }

对于计数，您需要将其存储在数据库中的某个位置.

您的代码会像这样，

Hi,

for the count you need to store it somewhere in database.

your code would be something like,

int count = getLastCount() + 1; //// get last inserted integer value.
string str = String.Format("{0}_{1}", TextBox1.Text.SubString(0,4), count.ToString("0000") );

您需要代码来从数据库中的getLastCount中获取最后插入的ID

希望这对您有帮助，

谢谢
-Amit.

you need code to get last inserted id from database in getLastCount

Hope this will help you,

Thanks
-Amit.

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