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我更新了我的代码，我在行中添加了 .Value = DBNull.Value

任何关于更新在日期和时间文本框中接受空值的数据库的建议任何建议/建议都非常感谢

Dim cmd As SqlCommand = sqlconn.CreateCommand
            sqlconn.Open()
            cmd.CommandType = CommandType.StoredProcedure
            cmd.CommandText = "UpdateEquipmentProfile"

            'declare the variables'
            cmd.Parameters.Add("@OE_ID", SqlDbType.VarChar, 11, "oeq-su-999").Value = DBNull.Value
            cmd.Parameters.Add("@OE_Category", SqlDbType.Char, 3, "COM").Value = DBNull.Value
            cmd.Parameters.Add("@OE_SubCategory", SqlDbType.Char, 3, "SU").Value = DBNull.Value
            cmd.Parameters.Add("@OE_Name", SqlDbType.VarChar, 35, "adminpmis01").Value = DBNull.Value
            cmd.Parameters.Add("@OE_User", SqlDbType.VarChar, 35, "Ivan").Value = DBNull.Value
            cmd.Parameters.Add("@OE_Brand", SqlDbType.VarChar, 15, "DELL").Value = DBNull.Value
            cmd.Parameters.Add("@OE_Model", SqlDbType.VarChar, 35, "optiplex").Value = DBNull.Value
            cmd.Parameters.Add("@OE_Specs", SqlDbType.VarChar, 1000, "dualcore").Value = DBNull.Value
            cmd.Parameters.Add("@OE_SerialNo", SqlDbType.VarChar, 35, "sgh5960").Value = DBNull.Value
            cmd.Parameters.Add("@OE_PropertyNo", SqlDbType.VarChar, 35, "j7h7h6g6f2").Value = DBNull.Value
            cmd.Parameters.Add("@OE_MacAddress", SqlDbType.VarChar, 100, "j7h7:h6g6f2").Value = DBNull.Value
            cmd.Parameters.Add("@OE_Static_IP", SqlDbType.VarChar, 15, "192.168.1.5").Value = DBNull.Value
            cmd.Parameters.Add("@OE_Vendor", SqlDbType.VarChar, 35, "ADWAYS").Value = DBNull.Value
            cmd.Parameters.Add("@OE_PurchaseDate", SqlDbType.SmallDateTime).Value = DBNull.Value
            cmd.Parameters.Add("@OE_WarrantyInclusiveYear", SqlDbType.Int).Value = DBNull.Value
            cmd.Parameters.Add("@OE_WarrantyStatus", SqlDbType.Char, 2, "IN").Value = DBNull.Value
            cmd.Parameters.Add("@OE_Status", SqlDbType.VarChar, 15, "Good").Value = DBNull.Value
            cmd.Parameters.Add("@OE_Dept_Code", SqlDbType.Char, 3, "ADM").Value = DBNull.Value
            cmd.Parameters.Add("@OE_Location_Code", SqlDbType.Char, 8, "ADM_OFC").Value = DBNull.Value
            cmd.Parameters.Add("@OE_Remarks", SqlDbType.VarChar, 1000, "ACTIVE").Value = DBNull.Value
            cmd.Parameters("@OE_ID").Value = txtOEID.Text
            cmd.Parameters("@OE_Category").Value = cmbCategory.Text
            cmd.Parameters("@OE_SubCategory").Value = cmbSubCategory.Text
            cmd.Parameters("@OE_Name").Value = txtName.Text
            cmd.Parameters("@OE_User").Value = txtUser.Text
            cmd.Parameters("@OE_Brand").Value = cmbBrand.Text
            cmd.Parameters("@OE_Model").Value = cmbModel.Text
            cmd.Parameters("@OE_Specs").Value = txtSpecs.Text
            cmd.Parameters("@OE_SerialNo").Value = txtSerialNo.Text
            cmd.Parameters("@OE_PropertyNo").Value = txtPropertyNo.Text
            cmd.Parameters("@OE_MacAddress").Value = txtMacAddress.Text
            cmd.Parameters("@OE_Static_IP").Value = txtStaticIp.Text
            cmd.Parameters("@OE_Vendor").Value = txtVendor.Text
            cmd.Parameters("@OE_PurchaseDate").Value = txtPurchaseDate.Text
            cmd.Parameters("@OE_WarrantyInclusiveYear").Value = txtWarrantyInclusiveYear.Text
            cmd.Parameters("@OE_WarrantyStatus").Value = txtWarrantyStatus.Text
            cmd.Parameters("@OE_Status").Value = txtStatus.Text
            cmd.Parameters("@OE_Dept_Code").Value = cmbDeptCode.Text
            cmd.Parameters("@OE_Location_Code").Value = cmbLocationCode.Text
            cmd.Parameters("@OE_Remarks").Value = txtRemarks.Text
            cmd.ExecuteNonQuery()
            MsgBox("Successfully Updated Equipment Profile")
            sqlconn.Close()
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1 回答 1

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1.首先，如果您没有设置该日期时间字段的允许空属性，请将其设置为允许空，以便它接受空。

2.如果文本框中没有输入日期，则在您的 UI 代码中不要传递参数。

3.然后在传递参数值的代码中检查参数值是否为空，将该参数的值作为 DBNull.Value 传递。

于 2013-04-30T04:29:23.780 回答