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POTable Value Parameter with Dapper stored procedures
 

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  1. POTable Value Parameter with Dapper stored procedures
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    <p>I am attempting to call a stored procedure that accepts a table valued parameter.</p> <p>I am following guidelines on <a href="https://stackoverflow.com/q/6232978/20048">this</a> question, implementing a custom parameter type:</p> <pre><code>internal class IntDynamicParam { string name; IEnumerable&lt;int&gt; numbers; public IntDynamicParam(string name,IEnumerable&lt;int&gt; numbers) { this.name = name; this.numbers = numbers; } public void AddParameters(IDbCommand command) { var sqlCommand = (SqlCommand)command; sqlCommand.CommandType = CommandType.StoredProcedure; List&lt;Microsoft.SqlServer.Server.SqlDataRecord&gt; number_list = new List&lt;Microsoft.SqlServer.Server.SqlDataRecord&gt;(); // Create an SqlMetaData object that describes our table type. Microsoft.SqlServer.Server.SqlMetaData[] tvp_definition = { new Microsoft.SqlServer.Server.SqlMetaData("n", SqlDbType.Int) }; foreach (int n in numbers) { // Create a new record, using the metadata array above. Microsoft.SqlServer.Server.SqlDataRecord rec = new Microsoft.SqlServer.Server.SqlDataRecord(tvp_definition); rec.SetInt32(0, n); // Set the value. number_list.Add(rec); // Add it to the list. } // Add the table parameter. var p = sqlCommand.Parameters.Add("@" +name, SqlDbType.Structured); p.Direction = ParameterDirection.Input; p.TypeName = "int_list_type"; p.Value = number_list; } } </code></pre> <p>and am attempting to use this as follows:</p> <pre><code>var p = new DynamicParameters(); p.AddDynamicParams(new IntDynamicParam("@IDList", new int[] { 1000, 2000, 3000 })); p.Add("@StartRow", startRow); p.Add("@EndRow", endRow); p.Add("@OrderByField", orderByField.ToString()); p.Add("@OrderBy", orderBy.ToString()); p.Add("@TotalRows", 0, dbType: DbType.Int32, direction: ParameterDirection.Output); var v = cnn.Query&lt;venue&gt;(spName, p, commandType: CommandType.StoredProcedure).ToList&lt;IDBVenueLite&gt;(); </code></pre> <p>However the parameter '<em>@IDList</em>' is not passed. Clearly AddDynamicParams is not the way to go, can anyone help me out?</p>
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    1. USSimon
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      1. USDavid Aleu
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    1. COFound this older question that may help: http://stackoverflow.com/questions/6232978/does-dapper-support-sql-2008-table-valued-parameters
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      1. USMarc Gravell
 

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