c# - Error:System.Data.SqlClient.SqlException (0x80131904): Conversion failed when converting the nvarchar value -


error:system.data.sqlclient.sqlexception (0x80131904): conversion failed when converting nvarchar value 'ff' data type int. @ system.data.sqlclient.sqlconnection.onerror(sqlexception exception, boolean breakconnection, action1 wrapcloseinaction) @ system.data.sqlclient.sqlinternalconnection.onerror(sqlexception exception, boolean breakconnection, action1 wrapcloseinaction) @ system.data.sqlclient.tdsparser.throwexceptionandwarning(tdsparserstateobject stateobj, boolean callerhasconnectionlock, boolean asyncclose) @ system.data.sqlclient.tdsparser.tryrun(runbehavior runbehavior, sqlcommand cmdhandler, sqldatareader datastream, bulkcopysimpleresultset bulkcopyhandler, tdsparserstateobject stateobj, boolean& dataready) @ system.data.sqlclient.sqlcommand.finishexecutereader(sqldatareader ds, runbehavior runbehavior, string resetoptionsstring) @ system.data.sqlclient.sqlcommand.runexecutereadertds(commandbehavior cmdbehavior, runbehavior runbehavior, boolean returnstream, boolean async, int32 timeout, task& task, boolean asyncwrite) @ system.data.sqlclient.sqlcommand.runexecutereader(commandbehavior cmdbehavior, runbehavior runbehavior, boolean returnstream, string method, taskcompletionsource1 completion, int32 timeout, task& task, boolean asyncwrite) @ system.data.sqlclient.sqlcommand.internalexecutenonquery(taskcompletionsource1 completion, string methodname, boolean sendtopipe, int32 timeout, boolean asyncwrite) @ system.data.sqlclient.sqlcommand.executenonquery() @ myapp.webform1.button1_click(object sender, eventargs e) in c:\myprojectfiles\myapp\myapp\registration.aspx.cs:line 48 clientconnectionid:a7f5710d-3f9e-4cd9-bf01-49ad3fd8cec4

conversion failed when converting nvarchar value 'ff' data type int.

just error says, failed conversion in sql query. hard in query issue @ without seeing query.


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