How to read string value from the database and compare it with another string

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C#

if (dt.Rows.Count > 0)
           {
               while (DR1.Read())
               {
                   role = DR1["Permission"].ToString();
                   if (role == "High")
                   {
                       this.Close();
                       admin.Show();
                   }

}

I am using the above code to check for the user permission. If the user permission is high t, then the admin screen should be displayed. The above code is not working. It reads the value "High" from the database as "High. Please suggest a better solution

Posted 23-Jan-13 0:12am

Member 9641602

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Herman<T>.Instance 23-Jan-13 6:15am

.Contains() or use linq

3 solutions

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Rahul K Singh · Answer 1 · 2013-01-23T00:25:00

Solution 1

Hi,

use .trim() in DR1["Permission"].ToString()

then try. It may help.

RKS

Posted 23-Jan-13 0:25am

Rahul K Singh

Comments

Member 9641602 23-Jan-13 7:45am

thanks Rahul

varma_life · Answer 2 · 2013-01-23T00:30:00

We can use Select method in DataTable . This method receives a string expression that specifies what rows you want to select. Select makes DataTables act more like small databases. We explore further this method.

 if(table.Select("role == High").count > 0 )  
{
admin.Show();
}

http://www.dotnetperls.com/datatable-select[^]

AdityaPratapSingh · Answer 3 · 2013-01-23T00:43:00

Solution 3

try this

C#

if (dt.Rows.Count > 0)
           {
               while (DR1.Read())
               {
                   role = DR1["Permission"].ToString();
                   if (role.Trim() == "High")
                   {
                       this.Close();
                       admin.Show();
                   }

}

Posted 23-Jan-13 0:43am

AdityaPratapSingh

Comments

Member 9641602 23-Jan-13 7:46am

thank yo so much , the code works fine now

How to read string value from the database and compare it with another string

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