failed to convert parameter value from string to guid

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i used asp c#

SqlParameter[] paramdizi2 = new SqlParameter[3]
            {                
                new SqlParameter("@UserId",SqlDbType.UniqueIdentifier),  
                new SqlParameter("@RolId",SqlDbType.UniqueIdentifier),
                new SqlParameter("@Sonuc",SqlDbType.Int) 
                                  
            };
            paramdizi2[0].Value = TxtUserId.Text;
            paramdizi2[1].Value = TxtRolId.Text;
            paramdizi2[2].Direction = ParameterDirection.ReturnValue;
            baglan.ExecuteNonQuery("RolDuzenle", CommandType.StoredProcedure, paramdizi2);

Failed to convert parameter value from string to guid.

How can I do this?

Posted 13-Jun-11 0:49am

Ccsnow

Updated 13-Jun-11 1:06am

Dalek Dave

v2

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Dalek Dave 13-Jun-11 7:06am

Edited for Grammar, Syntax, Readability and Code Block.

2 solutions

Solution 1

you are trying to insert string value to a GUID field of your database.

Check your code and insert a valid GUID into the UniqueIdentifier field.

check if @userid and @roleid both are of type uniqueidentifier...

you may catch error by trying above points :)

Posted 13-Jun-11 1:01am

Ra-one

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RakeshMeena · Accepted Answer · 2011-06-13T01:02:00

Solution 2

Try to convert string to GUID before assigning:

paramdizi2[0].Value = New Guid(TxtUserId.Text);

Posted 13-Jun-11 1:02am

RakeshMeena

Comments

Dalek Dave 13-Jun-11 7:07am

Good Call.

RakeshMeena 13-Jun-11 7:10am

Thanks Dalek!

Ccsnow 13-Jun-11 7:24am

thank you from Turkey

RakeshMeena 13-Jun-11 7:27am

Welcome from India!