C# DataTable and SqlBulkCopy

Question

I have a problem with my code :

DataTable tablePmeElement = new DataTable("PMEELEMENT");

DataColumn codeBiblioColumn = new DataColumn();
codeBiblioColumn.DataType = System.Type.GetType("System.String");
codeBiblioColumn.ColumnName = "CODEBIBLIO";
codeBiblioColumn.AllowDBNull = false;
codeBiblioColumn.DefaultValue = "";
codeBiblioColumn.MaxLength = 3;

tablePmeElement.Columns.Add(codeBiblioColumn);

element.CODEBIBLIO = (this.bibMde.BibCode.Length > 3) ? 
this.bibMde.BibCode.Substring(0, 3) : this.bibMde.BibCode;

tablePmeElement.Rows.Add(element);

s.WriteToServer(tablePmeElement);

When I execute this code, I get an error:

Column: "CODEBIBLIO" contains data with a length greater than: 3.

Have you an idea to solve my problem because I didn't find any solution.

Answer 1

When you set the MaxLength property on a DataColumn , you need to make sure the character length of the data returned for this column is under the property value. For instance, if you set codeBiblioColumn.MaxLength = 3 and the database returns a value larger than 3 characters, you will get a run-time error. To resolve this, either increase the MaxLength value, or decrease the length of the values stored in your database.